Method of calculating the separation flow with dust par icles at the entrance to round suction pipe in conditions of the approach flow
Estadístiques de LA Referencia / Recolecta
Inclou dades d'ús des de 2022
Cita com:
hdl:2117/190523
Tipus de documentText en actes de congrés
Data publicació2017
EditorCIMNE
Condicions d'accésAccés obert
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Abstract
Modeling the separation flows at the entrance to suction ducts is necessary to
determine the efficient intake area, jet contraction coefficient and the velocity fields in their
radius of action. The simplest and the most thoroughly researched one is the separation flow at
the entrance to the round thin-walled suction pipe, which is a part of many process
facilities; simulation of flows in its range of action is considered in many scientific works. For
the numerical modeling of such flows the boundary element method [1], the numerical
solution of Navier-Stokes equations for viscous incompressible fluid [2] and the
discrete vortex method were used. In the paper [3] there was developed a method of
mathematical modeling of flow separation at the entrance to suction ducts with the use of
stationary discrete vortexes. On the free surface of the flow the free vortexes circulation was
set, after which the average velocity in the suction duct and the velocity field were
approximately determined. The approach flow should be taken into account only if its velocity is
lower than the intake velocity in the pipe. Modernization of this method seems to be of interest,
as it would allow calculating the separation flow characteristics for both
high-velocity and low-velocity approach flows. This can be obviously achieved if the intake
velocity in the pipe is set, and the circulation on the free vortex sheet is determined in the
process of the problem solution.
The purpose of this work is developing the method of mathematical modeling of separation flow at
the entrance to round thin-walled suction pipe at the presence of an approach flow
using stationary discrete vortexes, as well as its verification.
The developed method of mathematical modeling of separation flow at the entrance to suction pipe at
the presence of an approach flow allows building the appropriate velocity field f an
air flow, the limit trajectories of dust particles and determining the aspiration coefficient.
ISBN978-84-946909-2-1
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Coupled-2017-34 ... ulating the separation.pdf | 1,189Mb | Visualitza/Obre |