Abstract
Exact solutions of the forced convection energy equations of dust particles and of liquid with fully developed flow in a circular pipe are obtained in the present problem when the inlet temperatures vary linearly with time and an interpretation of the case of laminar flows is given.
The meaning of any other symbols is given in the text as they occur.
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Abbreviations
- \(\bar T\) :
-
temperature of dust particle
- \(\bar T\) :
-
temperature of liquid
- c p :
-
specific heat of dust particle
- c :
-
specific heat of liquid
- a :
-
pipe radius
- K p :
-
thermal conductivity of dust particle
- K :
-
thermal conductivity of liquid
- \(\bar t\) :
-
time
- u p :
-
velocity component of dust particle in\(\bar z - direction\)
- u :
-
velocity component of liquid in\(\bar z - direction\)
- ū:
-
average velocity
- \(\bar r,\bar \Phi ,\bar z\) :
-
cylindrical polar coordinates (\(\bar z - flow\) direction)
- ϱ:
-
liquid density
- mN :
-
mass of dust particle per unit volume (=mN 0, constant)
- μ:
-
coefficient of viscosity of liquid
- ν:
-
kinematic coefficient of viscosity of liquid
- P :
-
Prandtl number (=μc/K)
- R :
-
Reynolds number (=aū/ν)
- h p :
-
heat transfer coefficient for flow over dust particle
- A p :
-
surface area of dust particle
- V p :
-
volume of dust particle
- T 0,T 1,T 2 :
-
known temperature constants
References
L. Farbar andM. J. Morley, Ind. Eng. Chem.,49, 1143, 1957.
D. C. Schluderberg, The Application of Gas-Ceramic Mixtures to Nuclear Power, Rept. No. CF 55-8-199 ORSORT, AEC, 1955.
H. A. Johnson, Trans. ASME,77, 1257, 1955.
J. J. Salomone andM. Newmann, Ind. Eng. Chem.,47, 283, 1955.
C. L. Tien, Transport Processes in Two-Phase Turbulent Flow, Ph. D. thesis, Princeton University, USA, 1959.
C. L. Tien, Trans. ASME,83 b, 183, 1961.
S. L. Soo, Fluid Dynamics of Multiphase Systems, Blaisdell Publishing Co., London, 1967.
S. N. Dube andC. L. Sharma, Acta Phys. Hung.,41, 95, 1976.
P. J. Schneider, Trans. ASME,79, 765, 1957.
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Dube, S.N. Heat transfer in two-phase laminar flow for timewise linear variation of inlet temperature in a circular pipe. Acta Physica 43, 163–171 (1977). https://doi.org/10.1007/BF03158286
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DOI: https://doi.org/10.1007/BF03158286