COMBINE LATTICE BOLTZMANN AND FINITE VOLUME METHODS FOR SIMULATING BLOOD FLOW AND LDL CONCENTRATION IN VESSEL

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TORABI AZAM; ALAFZADEH MINA; SHIRANI EBRAHIM; NILI AHMADABADI MAHDI

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Journal: Modares Mechanical Engineering Year:2016 | Volume:15 | Issue:11 Page(s): 253-262

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Title

COMBINE LATTICE BOLTZMANN AND FINITE VOLUME METHODS FOR SIMULATING BLOOD FLOW AND LDL CONCENTRATION IN VESSEL

Author(s)

TORABI AZAM | ALAFZADEH MINA | SHIRANI EBRAHIM | NILI AHMADABADI MAHDI | Issue Writer Certificate

Keywords

LATTICE BOLTZMANN METHODQ1

HYBRID METHODQ3

LDLQ2

SCHMIDT NUMBERQ2

Abstract

The aim of this paper is to investigate the Low-Density Lipoproteins (LDL) mass transfer in vessel walls using the LATTICE BOLTZMANN METHOD (LBM). High SCHMIDT NUMBER of LDL leads to numerical instability of LBM. In order to solve this problem, LBM and finite volume method (FVM) are combined. In this HYBRID METHOD, the blood velocity field is solved by LBM using the single relaxation time, SRT, model and FVM has been used for LDL concentration equation. LBM is able to simulate flow and mass transfer for the SCHMIDT NUMBER, Sc, up to 3000 only if the time consuming multi relaxation time is used. However, the proposed HYBRID METHOD suggested in this article can be used to solve the problem for Sc as high as 107. Good agreement between our results obtained from the hybrid simulation and the available results in the literature and noticeable decrease in CPU time compared with when the LBM is used for both flow and mass transfer, indicates the ability of the HYBRID METHOD. Finally, the HYBRID METHOD is used to simulate the mass transfer of LDL particles and investigate the effective factors for increasing the surface concentration, such as the size of LDL particles, wall suction velocity, wall shear stress, Newtonian and non-Newtonian fluids behavior and change of concentration boundary layer with various SCHMIDT NUMBER.

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APA: Copy

TORABI, AZAM, ALAFZADEH, MINA, SHIRANI, EBRAHIM, & NILI AHMADABADI, MAHDI. (2016). COMBINE LATTICE BOLTZMANN AND FINITE VOLUME METHODS FOR SIMULATING BLOOD FLOW AND LDL CONCENTRATION IN VESSEL. MODARES MECHANICAL ENGINEERING, 15(11), 253-262. SID. https://sid.ir/paper/177736/en

Vancouver: Copy

TORABI AZAM, ALAFZADEH MINA, SHIRANI EBRAHIM, NILI AHMADABADI MAHDI. COMBINE LATTICE BOLTZMANN AND FINITE VOLUME METHODS FOR SIMULATING BLOOD FLOW AND LDL CONCENTRATION IN VESSEL. MODARES MECHANICAL ENGINEERING[Internet]. 2016;15(11):253-262. Available from: https://sid.ir/paper/177736/en

IEEE: Copy

AZAM TORABI, MINA ALAFZADEH, EBRAHIM SHIRANI, and MAHDI NILI AHMADABADI, “COMBINE LATTICE BOLTZMANN AND FINITE VOLUME METHODS FOR SIMULATING BLOOD FLOW AND LDL CONCENTRATION IN VESSEL,” MODARES MECHANICAL ENGINEERING, vol. 15, no. 11, pp. 253–262, 2016, [Online]. Available: https://sid.ir/paper/177736/en

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