Acta Mechanica

, Volume 71, Issue 1, pp 215–225

Modified governing equations for gas-particle nozzle flows

Authors

  • C. K. Baruah
    • Department of Aerospace EngineeringIndian Institute of Science
  • N. M. Reddy
    • Department of Aerospace EngineeringIndian Institute of Science
Contributed Papers

DOI: 10.1007/BF01173948

Cite this article as:
Baruah, C.K. & Reddy, N.M. Acta Mechanica (1988) 71: 215. doi:10.1007/BF01173948

Summary

A modified set of governing equations for gas-particle flows in nozzles is suggested to include the inertial forces acting on the particle phase. The problem of gas-particle flow through a nozzle is solved using a first order finite difference scheme. A suitable stability condition for the numerical scheme for gas-particle flows is defined. Results obtained from the present set of equations are compared with those of the previous set of equations. It is also found that present set of equations give results which are in good agreement with the experimental observation.

Nomenclature

A

Cross-sectional area of nozzle

A*

cross-sectional area of nozzle throat

c

solid specific heat of particle

CD

coefficient of drag

cp

specific heat of gas at constant pressure

cv

specific heat of gas at constant volume

D

viscous drag force for a single solid particle

d

diameter of particle

L

length of nozzle

mp

mass of each solid particle

Nu

Nusselt number

p

pressure of gas

Pr

Prandtle number

Q

heat transfer from particle to gas phase

R

gas constant

rt

nozzle throat radius

Re

Reynolds number

T

temperature of gas

u

velocity of gas

β

density of particle phase

μ

viscosity of gas

ϱ

density of gas

η

loading ratio

Subscript

P

refers to particle phase

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Copyright information

© Springer-Verlag 1988