Open AccessMathematical model development of modified flow dispersion stress tensor in 2-D curvilinear flow domain
Author(s) -
M. P. Akhtar,
Nayan Sharma,
C. S. P. Ojha
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/594/1/012040
Subject(s) - curvilinear coordinates , cauchy stress tensor , flow (mathematics) , mechanics , mathematics , dispersion (optics) , mathematical analysis , geometry , physics , optics
For 2-D simulation of curvilinear flow field, use of momentum equations involves flow dispersion stress terms. Dispersion Stress terms take into account the effect of secondary flow variation arisen due to integration of the product of discrepancy between depth averaged velocity and the true velocity distributions. The objective of this paper is to present empirical mathematical functions to evaluate these terms. These terms can be incorporated in the 2D depth averaged flow equations as an additional source/sink term. In this work, the derivation is done to get revised set of empirical relations are later used in development of enhanced 2D numerical model. When compared with earlier investigations, the proposed formulations are simplified and numerically compatible. It is expected that modified formulation for flow dispersion stress tensor will lead to more realistic and improved simulation of flow field in curved flow domain.