Search

Your search keyword '"Adhikary, Biplab"' showing total 21 results
Start Over Author "Adhikary, Biplab"
21 results on '"Adhikary, Biplab"'

1. Reduction in turbulence-induced non-linear dynamic vibration using tuned liquid damper (TLD)

Author

Majumdar, Ananya, Adhikary, Biplab Ranjan, and Bhattacharya, Partha

Subjects
Physics - Fluid Dynamics, Physics - Applied Physics
Abstract

In the present research work, an attempt is made to develop a coupled non-linear turbulence-structure-damper model in a finite volume-finite difference (FV-FD) framework. Tuned liquid damper (TLD) is used as the additional damping system along with inherent structural damping. Real-time simulation of flow-excited bridge box girder or chimney section and the vibration reduction using TLD can be performed using the developed model. The turbulent flow field around a structure is modeled using an OpenFOAM transient PISO solver, and the time-varying drag force is calculated. This force perturbs the structure, causing the sloshing phenomena of the attached TLD, modeled using shallow depth approximation, damping the flow-induced vibration of the structure. The structural motion with and without the attached TLD is modeled involving the FD-based Newmark-Beta method using in-house MATLAB codes. The TLD is tuned with the vortex-shedding frequency of the low-Reynolds number flows, and it is found to be reducing the structural excitation significantly. On the other hand, the high-Reynolds number turbulent flow exhibits a broadband excitation, for which by tuning the TLD with few frequencies obtained through investigations, a good reduction in vibration is observed., Comment: 6 pages, 12 figures

Published
2022

2. Sensitivity mapping of TBL wall-pressure spectra with CFD turbulence models for wind tunnel test result prediction

Author

Adhikary, Biplab Ranjan, Majumdar, Ananya, Sarkar, Subhadeep, and Bhattacharya, Partha

Subjects
Physics - Fluid Dynamics
Abstract

In the present work, an attempt is made to map the sensitivity of the existing zero pressure gradient (ZPG) turbulent boundary layer (TBL) wall-pressure spectrum models with different TBL parameters, and eventually, with different Reynolds Averaged Navier Stokes (RANS) turbulence models, simulated in OpenFOAM and ANSYS Fluent solvers. This study will help future researchers to choose a particular RANS turbulence model vis-\`a-vis a particular wall-spectrum model in order to obtain a reasonably accurate wind tunnel result predicting capability. First, the best-predicting pressure spectrum models are selected by comparing them with wind tunnel test data. Next, considering the experimental TBL parameters as benchmarks, errors in RANS-produced data are estimated. Furthermore, wall-pressure spectra are calculated following semi-empirical spectrum models using TBL parameter feed obtained from experiments and computational fluid dynamics (CFD) simulations. Finally, sensitivity mapping is performed between spectrum models and the RANS models, with different normalized wall-normal distances (y+)., Comment: 6 pages, 12 figures

Published
2022

3. TBL-induced energy transmission into a double wall backed enclosure system computed in a cloud-based Python-FE environment

Author

Adhikary, Biplab Ranjan, Sahu, Atanu, and Bhattacharya, Partha

Subjects
Physics - Applied Physics
Abstract

We propose a fully coupled numerical model to predict turbulent boundary layer (TBL) induced energy transmission behavior for a double-wall backed enclosure system in a finite element (FE) framework computed in cloud-based Python environment. Goody single point wall-pressure spectrum and Corcos spatial correlation function are used to generate the TBL cross-power spectra. Mindlins first order shear deformation model is considered for the panels and a fully coupled TBL-structure-acoustic model is developed using the FE approach to predict the acoustic power level inside the enclosure for variable gap distance between the panels. The model is developed in a way to capture the contribution of orthotropic lamina sequence, frequency-dependent structural damping, and stiffening orientation in predicting the energy transmission into a double-wall backed enclosure. Thus, a new numerical model is presented that enables the designers with more precise energy transmission quantification with greater flexibility in terms of the number of panel leaves, geometry, and boundary conditions of the enclosure system, backed by double wall made of isotropic or orthotropic laminates., Comment: 9 pages, 2 figures. arXiv admin note: substantial text overlap with arXiv:2208.11155

Published
2022

4. A coupled FE-BE approach for vibro-acoustic response prediction of laminated composite panels due to turbulent boundary layer excitation involving Cholesky decomposition

Author

Adhikary, Biplab Ranjan, Sahu, Atanu, and Bhattacharya, Partha

Subjects
Physics - Applied Physics
Abstract

An original numerical framework is developed in the present research work in order to estimate the free field sound radiation from baffled structural panels subjected to turbulent boundary layer-induced excitation. A semi-analytical method is used to estimate the TBL wall pressure spectrum which is decomposed using Cholesky technique to obtain random wall pressure in the frequency domain. Structural panels are modeled using the finite element technique and a coupled finite element boundary element modeling technique is developed to estimate the sound power level radiating into the free field. Results are obtained for laminated composite structural panels with various fiber orientations and significant findings are discussed. The developed technique has the potential to be further extended for complex structures in terms of geometry, material properties, and boundary conditions. The complete numerical toolbox, developed in an in-house MATLAB environment, enables the prediction of turbulent structure acoustic coupled behavior at an early design stage., Comment: 14 pages, 11 figures

Published
2022

5. A coupled FE-RRM-based numerical model for analysis of energy transmission loss through stiffened double-wall panel due to TBL excitation

Author

Adhikary, Biplab Ranjan, Sahu, Atanu, and Bhattacharya, Partha

Subjects
Physics - Fluid Dynamics, Physics - Applied Physics
Abstract

We propose a fully coupled numerical model to predict energy transmission through a turbulent boundary layer (TBL) excited stiffened double-leaf flexible aircraft panel using a finite element (FE) framework. Mindlin first order shear deformation model is adopted for the panels and a TBL-structure-acoustic coupling model is developed using finite element-radiation resistance matrix (FE-RRM) approach to predict the transmission loss (TL) through double-leaf panels with variable thickness and stiffener orientation. The model is also capable to capture the contribution of orthotropic lamina sequence and frequency-dependent structural damping in predicting the TL. Thus, a new numerical model is proposed that enables the designers with greater flexibility in terms of the number of panel leaves, boundary, and stiffening condition of the aircraft panel-cavity-panel system, made of isotropic or orthotropic laminates., Comment: 9 pages, 2 figures

Published
2022

6. Reduction in Turbulence-Induced Non-linear Dynamic Vibration Using Tuned Liquid Damper (TLD)

Author

Majumdar, Ananya, Adhikary, Biplab Ranjan, Bhattacharya, Partha, Chaari, Fakher, Series Editor, Gherardini, Francesco, Series Editor, Ivanov, Vitalii, Series Editor, Haddar, Mohamed, Series Editor, Cavas-Martínez, Francisco, Editorial Board Member, di Mare, Francesca, Editorial Board Member, Kwon, Young W., Editorial Board Member, Trojanowska, Justyna, Editorial Board Member, Xu, Jinyang, Editorial Board Member, Singh, Krishna Mohan, editor, Dutta, Sushanta, editor, Subudhi, Sudhakar, editor, and Singh, Nikhil Kumar, editor

Published
2024
Full Text
View/download PDF

7. Sensitivity Mapping of TBL Wall-Pressure Spectra with CFD Turbulence Models for Wind Tunnel Test Result Prediction

Author

Adhikary, Biplab Ranjan, Majumdar, Ananya, Sarkar, Subhadeep, Bhattacharya, Partha, Chaari, Fakher, Series Editor, Gherardini, Francesco, Series Editor, Ivanov, Vitalii, Series Editor, Haddar, Mohamed, Series Editor, Cavas-Martínez, Francisco, Editorial Board Member, di Mare, Francesca, Editorial Board Member, Kwon, Young W., Editorial Board Member, Trojanowska, Justyna, Editorial Board Member, Xu, Jinyang, Editorial Board Member, Singh, Krishna Mohan, editor, Dutta, Sushanta, editor, Subudhi, Sudhakar, editor, and Singh, Nikhil Kumar, editor

Published
2024
Full Text
View/download PDF

15. Contributors

Author

Abbas, Sami, primary, AbouLaila, Mahmoud, additional, Acquas, Elio, additional, Adhikary, Biplab, additional, Afzal, M., additional, Agrogiannis, George, additional, Ahmed, Selena, additional, Alao, John P., additional, Almeida, Cristina M.M., additional, Amin, A.R.M. Ruhul, additional, Andrade, J.P., additional, Aruoma, Okezie I., additional, Asaumi, Hiroshi, additional, Assunção, Marco, additional, Augustyniak, Agnieszka, additional, Babcock, George F., additional, Babich, Harvey, additional, Bahorun, Theeshan, additional, Bajerska, Joanna, additional, Baldermann, Susanne, additional, Bandyopadhyay, Sandip Kumar, additional, Banerjee, Shuvojit, additional, Basu, Arpita, additional, Bettuzzi, Saverio, additional, Bhattacharya, Udayan, additional, Bhattacharyya, Anjan, additional, Bhattacharyya, Jharna, additional, Pathy, Nirmala Bhoo, additional, Bigelow, Rebecca L., additional, Bouglé, Dominique, additional, Brighenti, Furio, additional, Bun, Sok-Siya, additional, Byun, Eui-Hong, additional, Calani, Luca, additional, Cardelli, James A., additional, Chalo, R., additional, Chan, Laura, additional, Chan B.sc., Ruth, additional, Chan, Tak Hang, additional, Chang, Hsin-Huei, additional, Chang, Kuang-Hua, additional, Chuen-Chung Chang, Raymond, additional, Charalampos, Proestos, additional, Chatterjee, Indu Bhushan, additional, Chattopadhyay, Subrata, additional, Chen, Chung-Yu, additional, Chen, Di, additional, Chen, Haixia, additional, Hong-Duo, Chen, additional, Chen, Junping, additional, Chen, Po-Chung, additional, Chen, Richie L.C., additional, Chen, Xiaoqiang, additional, Cheng, Tzong-Jih, additional, Chu, Kai On, additional, Chyu, Ming-Chien, additional, Cimpoiu, Claudia, additional, Cuzzocrea, Salvatore, additional, Das, Asankur Sekhar, additional, Das, Dolan, additional, Das, Kaushik, additional, Bruin, Eveline A. de, additional, De Mejia, Elvira, additional, Dejaegher, Bieke, additional, Delaney, Sarah, additional, Dou, Jianpeng, additional, Dou, Q. Ping, additional, Dworakowska, Dorota, additional, Eckhoff, Rachel, additional, Egawa, Tatsuro, additional, Einother, Suzanne, additional, Elango, Ramesh, additional, Elias, Riad, additional, El-Sayed, Nesrine Salah EL-Dine, additional, Feng, Lei, additional, Feng, Wan Yong, additional, Fenu, Sandro, additional, Ferreres, Federico, additional, Figueira, Maria E., additional, Fix, Lindsey N., additional, Frazier, Richard A., additional, Frezza, Michael, additional, Gao, Xing-Hua, additional, García-Viguera, Cristina, additional, Gehrke, Sarah A., additional, Geraldine, Pitchairaj, additional, Ghosh, Arunava, additional, Giesbrecht, Timo, additional, Giunta, Brian, additional, Gil, José Ignacio, additional, Gil-Izquierdo, Angel, additional, Giri, Ashok K., additional, Gleichenhagen, Maike, additional, Grant, Paul S., additional, Gyamfi, Daniel, additional, Hamada, Taku, additional, Haque, Md Abdul, additional, Hara, Yukihiro, additional, Hashimoto, Michio, additional, Hayashi, Nobuyuki, additional, Hayashi, Tstauya, additional, He, Rong-Rong, additional, Heber, David, additional, Henning, Susanne M., additional, Hirata, Yasunobu, additional, Yuen-Shan Ho, Ku, additional, Hosu, Anamaria, additional, Houghton, Jean Marie, additional, Hsiao, Hsien-Yi, additional, Hsieh, Bo-Chuan, additional, Huang, Chun-Hsiung, additional, Huang, Dejian, additional, Hiu-Ling Hung, Clara, additional, Hung, Yueh-Tzu, additional, Hwang, Daniel H., additional, Hyun-Gyun, Yuk, additional, Igarashi, Ikuo, additional, Isobe, Mitsuaki, additional, Jasienska, Grazyna, additional, Jeszka, Jan, additional, Ji, Seon Kim, additional, Jianrong, Li, additional, Jin, Heiying, additional, Jing, Yali, additional, Jinz, Heiying, additional, Jordan, Susan, additional, Jundoria, Arvin, additional, Kalinovsky, Tatiana, additional, Kamunya, S., additional, Kanno, Yoshihiko, additional, Kanrar, Bappaditya, additional, Kao, Yung-Hsi, additional, Kapetanovic, Izet M., additional, Kapiszewska, Maria, additional, Kapsokefalou, Maria, additional, Kavantzas, Nikolaos, additional, Keller, Bradley B., additional, Kerio, Lilian C., additional, Khan, Sara Anees, additional, Kim, Jong-Min, additional, Kojima-Yuasa, Akiko, additional, Kokotkiewicz, Adam, additional, Komaitis, Michael, additional, Kottur, Govindasamy, additional, Koutelidakis, Antonios E., additional, Ku, Hui-Chen, additional, Kua, Ee-Heok, additional, Kuhnert, Nikolai, additional, Kuo, Yow-Chii, additional, Kurihara, Hiroshi, additional, Kuriyama, Shinichi, additional, Lanzett, Manuella, additional, Le, Anh D., additional, Lee, Andy H., additional, Lee, Joo Young, additional, Lee, Maw-Rong, additional, Lee, Ren-Jye, additional, Lee, Seung-Cheol, additional, Lee, Viola S.Y., additional, Li, Na-Na, additional, Li, Wei, additional, Li, Yuan-Hong, additional, Liang, Yue-Rong, additional, Lin, Chih-Ming, additional, Lin, Ching-Ling, additional, Liu, Chi-Wei, additional, Liu, Hang-Seng, additional, Liu, Pengxin, additional, Longoni, Rosanna, additional, Lorenz, Mario, additional, Lu, Jian-Liang, additional, Lu, Ya-Ning, additional, Lucas, Edralin A., additional, Łuczaj, Wojciech, additional, Luczkiewicz, Maria, additional, Luximon-Ramma, Amitabye, additional, Lynch, Paul, additional, Lyons, Timothy J., additional, Ma, Xiao, additional, Maeda-Yamamoto, Mari, additional, Mahungu, Symon M., additional, Makabe, Hidefumi, additional, Mao, Jenny T., additional, Mariga, Irvine K., additional, Maritim, T., additional, Martin, Colin R., additional, Masuda, Shuichi, additional, Matsui-Yuasa, Isao, additional, Mbuthia, Stephen Karori, additional, Medina, Sonia, additional, Mehra, Aradhana, additional, Melzig, Matthias F., additional, Merklinger-Gruchala, Anna, additional, Meydani, Mohsen, additional, Miclaus, Vasile, additional, Mitra, Chandan, additional, Miyamoto, Yohei, additional, Momoi, Nobuo, additional, Mousa, S.A., additional, Mudau, Fhatuwani Nixwell, additional, Mujtaba, Taskeen, additional, Mumy, Karen L., additional, Murakami, Akira, additional, Murase, Takatoshi, additional, Murugan, Ramalingam Senthil, additional, Murugesan, Subramanian, additional, Nagai, Ryozo, additional, Nagini, Siddavaram, additional, Nagle, Christina, additional, Nakajima, Kei, additional, Neergheen-Bhujun, Vidushi, additional, Ng, Tze-Pin, additional, Ngure, Francis Muigai, additional, Niedzwiecki, Aleksandra, additional, Niu, Kaijun, additional, Nomani, M., additional, O'Brien, Peter, additional, Ogawa, Masahito, additional, Oh, Eung Seok, additional, Okamoto, Kazushi, additional, Ollivier, Evelyne, additional, Osterburg, Andrew R., additional, Otsuki, Makoto, additional, Pang, Chi Pui, additional, Pasalich, Maria, additional, Paterniti, Irene, additional, Patsouris, Efstratios, additional, Persson, Ingrid A.-L., additional, Piljac, Ante, additional, Piljac-Zegarac, Jasenka, additional, Porto, Luís Cristóvão, additional, Prendergast, Mark A., additional, Pripdeevech, Patcharee, additional, Priyamvada, Shubha, additional, Puangpraphant, Sirima, additional, Senthil Kumar, Ramasamy Shanmugasundaram, additional, M., Gregory Raner, additional, Rath, Matthias, additional, Del Rio, Daniele, additional, Rizk, Sherine M., additional, Rizzi, Federica, additional, Robinson, Randy J., additional, Rodrigues, Jorge, additional, Roomi, M. Waheed, additional, Ross, Colleen Margaret, additional, Safer, Abdel-Majeed A., additional, Saikat, Sohel, additional, Sama, Andrew E., additional, Šamec, Dunja, additional, Sameshima, Yoichi, additional, Schuck, Alyssa G., additional, Seong, Baik-Lin, additional, Sharma, Anubha, additional, Shen, Chwan-Li, additional, Sheu, Joen-Rong, additional, Shih, Li-Jane, additional, Shimamura, Yuko, additional, Shin, Dong Moon, additional, Shitandi, Anakalo A., additional, Skrzydlewska, Elżbieta, additional, Smith, Thomas J., additional, Somanah, Jhoti, additional, Song, Jae-Min, additional, Spina, Liliana, additional, Stepp, John Richard, additional, Stoicov, Calin, additional, Sun, Guang-Huan, additional, Suzuki, Jun-ichi, additional, Tachibana, Hirofumi, additional, Tan, Jun, additional, Tang, Nelson L.S., additional, Tang, Xudong, additional, Theodore, Joseph, additional, Thomas, Philip A., additional, Tobita, Kimimasa, additional, Toolsee, Naushad A., additional, Tzen, Jason T.C., additional, Uiterwaal, Cuno S.P.M., additional, Valenca, Samuel Santos, additional, van Buren, Leo, additional, Butler, Tracy R., additional, van der Pijl, Pieter C., additional, Heyden, Yvan Vander, additional, Vignes, Michel, additional, Vinci, Stefania, additional, Wachira, Francis, additional, Walden, Charlotte M., additional, Wan, Luke, additional, Wang, Chi Chiu, additional, Wang, Haichao, additional, Wang, Piwen, additional, Wanyoko, J.K., additional, Watanabe, Naoharu, additional, Weisburg, Jeffrey H., additional, Weiss, David J., additional, Weng, Jueng-Tsueng, additional, Wink, Michael, additional, Chian Wong, Adeline Ik, additional, Wongpornchai, Sugunya, additional, Woo, Jean, additional, Wozniewicz, Malgorzata, additional, Wu, Bo-Tsung, additional, Wu, Yan, additional, Xiaoqiang, Chen, additional, Yadav, Sudhir Kumar, additional, Yamada, Hiroshi, additional, Yang, Ya Ping, additional, Yang, Ziyin, additional, Chien-Chih, Yeh, additional, Yu, Hyun-Gyun, additional, Yusufi, Ahad N.K., additional, Zahreldin, Ahmad A., additional, Zhang, Hongzheng, additional, Zhang, Liang, additional, Zhang, Baohong, additional, Zhang, Bei, additional, Zhang, Chunxia, additional, Zhang, Jing-Song, additional, Zhang, Lan, additional, Zhang, Li, additional, Zhang, Qunzhou, additional, Zhang, Zheng-Zhu, additional, Zhao, Ling, additional, Zhou, Keyuan, additional, Zhou, Limin, additional, Zhu, Dalong, additional, Zhu, Shu, additional, Zimmermann, Benno F., additional, Zingg, Jean-Marc, additional, Zuckerbraun, Harriet L., additional, and Zuo, Zhong, additional

Published
2013
Full Text
View/download PDF

18. Green tea processing by pan-firing from region-specific tea (Camellia sinensisL.) cultivars - a novel approach to sustainable tea production in Dooars region of North Bengal

Author

Adhikary, Biplab, Kashyap, Bishwapran, Gogoi, Romen C., Sabhapondit, Santanu, Babu, Azariah, Deka, Bhabesh, Pramanik, Prabhat, and Das, Buddhadeb

Abstract

•First novel attempt for a detailed study on pan-processed green tea quality indicators.•Optimization of pan-firing method followed by green tea processing during different flushes.•Pan-fired green teas exhibited the desirable quality and biochemical attributes.•Green tea specific cultivars having seasonal variations in quality constituents were investigated.

Published
2023
Full Text
View/download PDF

21. Black tea and theaflavins suppress various inflammatory modulators and i-NOS mediated nitric oxide synthesis during gastric ulcer healing.

Author

Adhikary, Biplab, Yadav, Sudhir K., Chand, Saswati, Bandyopadhyay, Sandip K., and Chattopadhyay, Subrata

Subjects
*STOMACH ulcers, *NITRIC oxide, *WOUND healing, *INDOMETHACIN, *SELECTINS, *CYCLOOXYGENASES, *ENZYME activation, *LABORATORY mice
Abstract

The modulation of the cyclooxygenase-independent pathway by black tea (BT) and its constituent theaflavins (TFs) during their healing action against indomethacin-induced stomach ulceration in mice was investigated. On the 3rd day of its administration, indomethacin (18 mg/kg) induced maximum stomach ulceration, which was associated with increased myeloperoxidase (MPO) activity (93.3%, p < 0.001), and inducible nitric oxide synthase (iNOS) expression (1.6-fold, p < 0.001), along with augmented levels of serum nitrite (1.5-fold, p < 0.001), selectins and cell adhesion molecules (CAMs), as well as reduced endothelial nitric oxide synthase (eNOS) expression (60%, p < 0.001). Treatment with BT (40 mg/kg) and TF (1 mg/kg) for 3 days reversed these parameters and provided excellent (78--81%) ulcer healing. However, alterations of NOS expressions and levels of selectins and CAMs were only partially responsible for the excellent healing capacity (∼∼80%) of omeprazole (3 mg/kg ×× 3 days). [ABSTRACT FROM AUTHOR]

Published
2011
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results