COMPARISON OF THE EFFECT OF HYDRODYNAMIC AND HYDROSTATIC MODELS FOR PRESSURE CORRECTION TERM IN TWO-FLUID MODEL IN MODELING GAS-LIQUID TWO-PHASE FLOWS

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ESMAEILI KAZEM; SHOKRI VAHID

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Journal: Modares Mechanical Engineering Year:2017 | Volume:16 | Issue:12 Page(s): 50-60

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Information Journal Paper

Title

COMPARISON OF THE EFFECT OF HYDRODYNAMIC AND HYDROSTATIC MODELS FOR PRESSURE CORRECTION TERM IN TWO-FLUID MODEL IN MODELING GAS-LIQUID TWO-PHASE FLOWS

Author(s)

ESMAEILI KAZEM | SHOKRI VAHID | Issue Writer Certificate

Keywords

TWO PHASE FLOWQ2

TWO-FLUID MODELQ1

PRESSURE CORRECTION TERMQ1

NUMERICAL SIMULATIONQ2

Abstract

This paper presents a numerical study using TWO-FLUID MODEL in order to compare the effect of hydrodynamic and hydrostatic models for PRESSURE CORRECTION TERM in TWO-FLUID MODEL in modeling gasliquid two-phase flows to provide a more accurate model. TWO-FLUID MODEL is solved by Godunov Approximate Riemann Solver. The TWO-FLUID MODEL is applied using both hydrodynamic PRESSURE CORRECTION TERM and hydrostatic PRESSURE CORRECTION TERM for four sample examples including Water Faucet Case, Water-Air Separation Case, Toumi’s Shock Tube Case, and Large Relative Velocity Shock Tube Case. Hydrostatic PRESSURE CORRECTION TERM is neglected for vertical geometry, therefore, in this geometry; TWO-FLUID MODEL cannot be hyperbolic. Thus, hydrostatic PRESSURE CORRECTION TERM is not a stabilizing term. Also, in horizontal pipe and for atmospheric conditions, hydrostatic PRESSURE CORRECTION TERM presents better results than hydrodynamic PRESSURE CORRECTION TERM. But, in non-atmospheric conditions, hydrodynamic PRESSURE CORRECTION TERM presents better results. Therefore, in order to select a suitable PRESSURE CORRECTION TERM for TWO-FLUID MODEL, we consider geometry (vertical or horizontal) and flow conditions (atmospheric or under-pressure). Also, hydrodynamic PRESSURE CORRECTION TERM in twofluid equations system is hyperbolic in a broader range than hydrostatic PRESSURE CORRECTION TERM.

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APA: Copy

ESMAEILI, KAZEM, & SHOKRI, VAHID. (2017). COMPARISON OF THE EFFECT OF HYDRODYNAMIC AND HYDROSTATIC MODELS FOR PRESSURE CORRECTION TERM IN TWO-FLUID MODEL IN MODELING GAS-LIQUID TWO-PHASE FLOWS. MODARES MECHANICAL ENGINEERING, 16(12 ), 50-60. SID. https://sid.ir/paper/178177/en

Vancouver: Copy

ESMAEILI KAZEM, SHOKRI VAHID. COMPARISON OF THE EFFECT OF HYDRODYNAMIC AND HYDROSTATIC MODELS FOR PRESSURE CORRECTION TERM IN TWO-FLUID MODEL IN MODELING GAS-LIQUID TWO-PHASE FLOWS. MODARES MECHANICAL ENGINEERING[Internet]. 2017;16(12 ):50-60. Available from: https://sid.ir/paper/178177/en

IEEE: Copy

KAZEM ESMAEILI, and VAHID SHOKRI, “COMPARISON OF THE EFFECT OF HYDRODYNAMIC AND HYDROSTATIC MODELS FOR PRESSURE CORRECTION TERM IN TWO-FLUID MODEL IN MODELING GAS-LIQUID TWO-PHASE FLOWS,” MODARES MECHANICAL ENGINEERING, vol. 16, no. 12 , pp. 50–60, 2017, [Online]. Available: https://sid.ir/paper/178177/en

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