Research Papers: Heat and Mass Transfer

Two-Phase Dusty Fluid Flow Along a Rotating Axisymmetric Round-Nosed Body

[+] Author and Article Information
Sadia Siddiqa

Department of Mathematics,
COMSATS Institute of Information Technology,
Kamra Road,
Attock 43600, Pakistan;
Dipartimento di Ingegneria,
Università degli Studi di Napoli “Parthenope,”
Centro Direzionale, Isola C4,
Napoli 80143, Italy
e-mail: saadiasiddiqa@gmail.com

Naheed Begum

Institute of Applied Mathematics (LSIII),
TU Dortmund,
Vogelpothsweg 87,
Dortmund D-44221, Germany

M. A. Hossain

Department of Mathematics,
University of Dhaka,
Dhaka 1000, Bangladesh

Rama Subba Reddy Gorla

Department of Mechanical and Civil Engineering,
Purdue University Northwest,
Westville, IN 46391

1Corresponding author.

Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received April 6, 2016; final manuscript received February 21, 2017; published online April 19, 2017. Assoc. Editor: George S. Dulikravich.

J. Heat Transfer 139(8), 082005 (Apr 19, 2017) (7 pages) Paper No: HT-16-1176; doi: 10.1115/1.4036279 History: Received April 06, 2016; Revised February 21, 2017

This article is concerned with the class of solutions of gas boundary layer containing uniform, spherical solid particles over the surface of rotating axisymmetric round-nosed body. By using the method of transformed coordinates, the boundary layer equations for two-phase flow are mapped into a regular and stationary computational domain and then solved numerically by using implicit finite difference method. In this study, a rotating hemisphere is used as a particular example to elucidate the heat transfer mechanism near the surface of round-nosed bodies. We will investigate whether the presence of dust particles in carrier fluid disturbs the flow characteristics associated with rotating hemisphere or not. A comprehensive parametric analysis is presented to show the influence of the particle loading, the buoyancy ratio parameter, and the surface of rotating hemisphere on the numerical findings. In the absence of dust particles, the results are graphically compared with existing data in the open literature, and an excellent agreement has been found. It is noted that the concentration of dust particles’ parameter, Dρ, strongly influences the heat transport rate near the leading edge.

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Grahic Jump Location
Fig. 4

(a) τx and (b) Q for αd = 1.0, 2.0, 3.0 while Dρ = 100.0, Pr = 0.7, γ = 0.45, and λ = 0.1

Grahic Jump Location
Fig. 5

(a) τx and (b) Q for λ = 0.0, 0.5, 1.0, 2.0 while Dρ = 100.0, Pr = 0.7, γ = 0.45, and αd = 1.0

Grahic Jump Location
Fig. 6

(a) Velocity profile U, (b) temperature profile Θ, and (c) velocity profile W for Dρ = 0.0, 100.0 while Pr = 0.7, γ = 0.45, αd = 1.0, λ = 0.1, and X = 1.54

Grahic Jump Location
Fig. 7

(a) Velocity profile U, (b) temperature profile Θ, and (c) velocity profile W for λ = 0.0, 1.0 while Pr = 0.7, γ = 0.45, αd = 1.0, Dρ = 100.0, and X = 1.54

Grahic Jump Location
Fig. 2

Comparison of (a) τx and (b) Q without dust particles (Dρ = 0.0) obtained for λ = 0.1, 0.5, 1.0 and Pr = 0.72

Grahic Jump Location
Fig. 3

(a) τx and (b) Q for air and water particle flow with Dρ = 100.0 (air), 10.0 (water); Pr = 0.7 (air), Pr = 7.0 (water); γ = 0.45 (air), 0.1 (water); αd = 1.0; and λ = 0.1



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