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Awais M, Farooq S, Yasmin H, Hayat T, Alsaedi A. Convective heat transfer analysis for MHD peristaltic flow in an asymmetric channel. INT J BIOMATH 2014. [DOI: 10.1142/s1793524514500235] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Magnetohydrodynamic peristaltic flow of Jeffery fluid in an asymmetric channel is addressed. The channel walls satisfy the convective conditions. Asymmetry here is considered due to wave trains of different amplitudes and phases. Solutions for the velocity, temperature and pressure gradient are obtained using long wavelength approximation. Plots reflecting the impact of various parameters of interest are shown and examined.
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Affiliation(s)
- M. Awais
- Department of Mathematics, COMSATS Institute of Information Technology, Attock, Pakistan
| | - S. Farooq
- Department of Mathematics, COMSATS Institute of Information Technology, Attock, Pakistan
| | - H. Yasmin
- Department of Mathematics, Quaid-I-Azam University 45320, Islamabad 44000, Pakistan
| | - T. Hayat
- Department of Mathematics, Quaid-I-Azam University 45320, Islamabad 44000, Pakistan
- Department of Mathematics, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - A. Alsaedi
- Department of Mathematics, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
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SUN QI, LIU JINLONG, ZHANG HAIBO, ZHENG JINGHAO, HONG HAIFA, SUN YANJUN, CHEN HUIWEN, LIU JINFEN, WANG QIAN, LIU YINGZHENG. INFLUENCE OF EXERCISE ON THREE TYPES OF FONTAN MODIFICATIONS: COMPARISON BY NUMERICAL SIMULATIONS. J MECH MED BIOL 2014. [DOI: 10.1142/s0219519414500079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Low energy efficiency of Fontan-type connections in exercise conditions may lead to limited post-operative exercise capacity of patients. The objective of this study was to compare the energy efficiency of different types of Fontan modifications in exercise conditions. In this study, the flow rate of the inferior vena cava (IVC) was increased artificially to simulate exercise conditions. The control volume power loss and energy efficiency were investigated in three types of Fontan modifications using the method of computational fluid dynamics (CFD). In the intracardiac tunnel Fontan, the power loss was 7.9 times of that calculated in resting state when the flow rate of IVC increased to three times of that measured at the right pulmonary artery flow ratio of 50%. The energy efficiency of it decreased prominently from 91.9% to 79.9%. On the contrary, in the extracardiac Fontan with direct cavopulmonary anastomosis (direct Fontan), the magnitude of power loss was only 2.9 times of that in resting state and the energy efficiency changed only from 91.8% to 89.1%. The results of extracardiac conduit Fontan fell in between. It showed that direct Fontan had higher energy efficiency than intracardiac tunnel or extracardiac conduit Fontan in exercise conditions.
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Affiliation(s)
- QI SUN
- Department of Cardiothoracic Surgery, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, 1678# Dongfang Road, Shanghai, P. R. China
| | - JINLONG LIU
- Department of Cardiothoracic Surgery, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, 1678# Dongfang Road, Shanghai, P. R. China
| | - HAIBO ZHANG
- Department of Cardiothoracic Surgery, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, 1678# Dongfang Road, Shanghai, P. R. China
| | - JINGHAO ZHENG
- Department of Cardiothoracic Surgery, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, 1678# Dongfang Road, Shanghai, P. R. China
| | - HAIFA HONG
- Department of Cardiothoracic Surgery, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, 1678# Dongfang Road, Shanghai, P. R. China
| | - YANJUN SUN
- Department of Cardiothoracic Surgery, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, 1678# Dongfang Road, Shanghai, P. R. China
| | - HUIWEN CHEN
- Department of Cardiothoracic Surgery, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, 1678# Dongfang Road, Shanghai, P. R. China
| | - JINFEN LIU
- Department of Cardiothoracic Surgery, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, 1678# Dongfang Road, Shanghai, P. R. China
| | - QIAN WANG
- Department of Medical Imaging, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, 1678# Dongfang Road, Shanghai, P. R. China
| | - YINGZHENG LIU
- School of Mechanical Engineering, Shanghai Jiao Tong University, 800# Dongchuan Road, Shanghai, P. R. China
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Basiri Parsa A, Rashidi M, Anwar Bég O, Sadri S. Semi-computational simulation of magneto-hemodynamic flow in a semi-porous channel using optimal homotopy and differential transform methods. Comput Biol Med 2013; 43:1142-53. [DOI: 10.1016/j.compbiomed.2013.05.019] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2013] [Revised: 05/22/2013] [Accepted: 05/23/2013] [Indexed: 11/28/2022]
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