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Title: Two-way coupling effects in dilute gas-particle flows

Abstract

A general analysis of gas-particle flows is presented using the hypotheses of a number of particles large enough to consider the solid phase as a continuum and of a volume fraction small enough to consider the suspension as dilute. It is found that the Stokes number (Sk) and the particle loading ratio (beta) are the basic parameters governing the flow. For small values of beta and large values of Sk it is possible to disregard the effect of the particles on the fluid field and simple numerical models based on one-way coupling may be used. However, for larger values of beta and lower Sk, both the fluid and the solid phase flow fields (and as a consequence the overall quantities such as pressure drop and energy dissipation) are determined to be substantially affected by the interphase coupling. A computational model accounting for two-way coupling is presented and found to provide for an accurate simulation. In addition, correlations are developed for determining the pressure drop which increases as a function of beta and Sk, and it is suggested that these correlations may be of practical interest for the investigation of flow metering systems.

Authors:
 [1];  [2]
  1. Roma, Universita, Rome, Italy
  2. Ancona, Universita, Ancona, Italy
Publication Date:
OSTI Identifier:
6510637
Report Number(s):
CONF-821101-
Journal ID: CODEN: JFEGA; TRN: 83-006416
Resource Type:
Conference
Journal Name:
J. Fluids Eng.; (United States)
Additional Journal Information:
Journal Volume: 104:82-WA/FE-1; Conference: ASME winter annual meeting, Phoenix, AZ, USA, 14 Nov 1982
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; GAS FLOW; COUPLING CONSTANTS; FLOW MODELS; PARTICLE KINEMATICS; CONSERVATION LAWS; FINITE DIFFERENCE METHOD; FLOW STRESS; GASEOUS DIFFUSION; NAVIER-STOKES EQUATIONS; PARTICLE SIZE; PRESSURE DROP; PRESSURE GRADIENTS; TWO-PHASE FLOW; DIFFERENTIAL EQUATIONS; DIFFUSION; EQUATIONS; FLUID FLOW; ITERATIVE METHODS; MATHEMATICAL MODELS; NUMERICAL SOLUTION; PARTIAL DIFFERENTIAL EQUATIONS; SIZE; STRESSES; 640410* - Fluid Physics- General Fluid Dynamics

Citation Formats

Di Giacinto, M, and Piva, R. Two-way coupling effects in dilute gas-particle flows. United States: N. p., 1982. Web.
Di Giacinto, M, & Piva, R. Two-way coupling effects in dilute gas-particle flows. United States.
Di Giacinto, M, and Piva, R. Wed . "Two-way coupling effects in dilute gas-particle flows". United States.
@article{osti_6510637,
title = {Two-way coupling effects in dilute gas-particle flows},
author = {Di Giacinto, M and Piva, R},
abstractNote = {A general analysis of gas-particle flows is presented using the hypotheses of a number of particles large enough to consider the solid phase as a continuum and of a volume fraction small enough to consider the suspension as dilute. It is found that the Stokes number (Sk) and the particle loading ratio (beta) are the basic parameters governing the flow. For small values of beta and large values of Sk it is possible to disregard the effect of the particles on the fluid field and simple numerical models based on one-way coupling may be used. However, for larger values of beta and lower Sk, both the fluid and the solid phase flow fields (and as a consequence the overall quantities such as pressure drop and energy dissipation) are determined to be substantially affected by the interphase coupling. A computational model accounting for two-way coupling is presented and found to provide for an accurate simulation. In addition, correlations are developed for determining the pressure drop which increases as a function of beta and Sk, and it is suggested that these correlations may be of practical interest for the investigation of flow metering systems.},
doi = {},
url = {https://www.osti.gov/biblio/6510637}, journal = {J. Fluids Eng.; (United States)},
number = ,
volume = 104:82-WA/FE-1,
place = {United States},
year = {1982},
month = {9}
}

Conference:
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