THE NUMERICAL SIMULATION OF FLOW AND HEAT TRANSFER OF TEMPERATURE DEPENDENT PROPERTIES OF VISCOELASTIC FLUID IN AN AXISYMMETRIC SUDDEN EXPANSION

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MONTAHAEE ALI; SHAHMARDAN MOHAMMAD MOHSEN; NOROUZI MAHMOOD

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Journal: Modares Mechanical Engineering Year:2017 | Volume:16 | Issue:12 Page(s): 39-49

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Title

THE NUMERICAL SIMULATION OF FLOW AND HEAT TRANSFER OF TEMPERATURE DEPENDENT PROPERTIES OF VISCOELASTIC FLUID IN AN AXISYMMETRIC SUDDEN EXPANSION

Author(s)

MONTAHAEE ALI | SHAHMARDAN MOHAMMAD MOHSEN | NOROUZI MAHMOOD | Issue Writer Certificate

Keywords

VISCOELASTIC FLUIDQ2

FLOW AND HEAT TRANSFERQ1

NUSSELT NUMBERQ1

SUDDEN EXPANSIONQ1

Abstract

In the current research, laminar FLOW AND HEAT TRANSFER of VISCOELASTIC FLUID in an axisymmetric SUDDEN EXPANSION with expansion ratio of 1: 3 is investigated. Finite volume method and PISO algorithm are used for numerical simulation of FLOW AND HEAT TRANSFER of VISCOELASTIC FLUID. Also, to study the effect of elasticity property of polymeric fluid flow, nonlinear Phan-Thein-Tanner (PTT) rheological model is used. Most of the researches that have been done in this field are focused on investigating hydrodynamic parameters of flow, like studies on the effect of Reynolds number and elasticity property on vortice length, so due to the scarcity of comprehensive study about the heat transfer of VISCOELASTIC FLUID flow in SUDDEN EXPANSION, performing the present study seems necessary. Considering some of the rheological and thermodynamic properties of VISCOELASTIC FLUID as a function of temperature is the other innovation of the current study which, due to the sensitivity of some of the viscoelastic properties to temperature, considering this hypothesis for solving energy equation is necessary. The results of numerical simulation show that the maximum quantity of local Nusselt of SUDDEN EXPANSION for downstream wall is approximately where vortices finish and the procedure of velocity variation is similar to a smooth pipe. Also, with increasing Reynolds number that led to enhancing length and intensity of vortices, the maximum local Nusselt in SUDDEN EXPANSION region moves further toward downstream.

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APA: Copy

MONTAHAEE, ALI, SHAHMARDAN, MOHAMMAD MOHSEN, & NOROUZI, MAHMOOD. (2017). THE NUMERICAL SIMULATION OF FLOW AND HEAT TRANSFER OF TEMPERATURE DEPENDENT PROPERTIES OF VISCOELASTIC FLUID IN AN AXISYMMETRIC SUDDEN EXPANSION. MODARES MECHANICAL ENGINEERING, 16(12 ), 39-49. SID. https://sid.ir/paper/178157/en

Vancouver: Copy

MONTAHAEE ALI, SHAHMARDAN MOHAMMAD MOHSEN, NOROUZI MAHMOOD. THE NUMERICAL SIMULATION OF FLOW AND HEAT TRANSFER OF TEMPERATURE DEPENDENT PROPERTIES OF VISCOELASTIC FLUID IN AN AXISYMMETRIC SUDDEN EXPANSION. MODARES MECHANICAL ENGINEERING[Internet]. 2017;16(12 ):39-49. Available from: https://sid.ir/paper/178157/en

IEEE: Copy

ALI MONTAHAEE, MOHAMMAD MOHSEN SHAHMARDAN, and MAHMOOD NOROUZI, “THE NUMERICAL SIMULATION OF FLOW AND HEAT TRANSFER OF TEMPERATURE DEPENDENT PROPERTIES OF VISCOELASTIC FLUID IN AN AXISYMMETRIC SUDDEN EXPANSION,” MODARES MECHANICAL ENGINEERING, vol. 16, no. 12 , pp. 39–49, 2017, [Online]. Available: https://sid.ir/paper/178157/en

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