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Numerical Simulation of Flow Field and Heat Transfer in Annular Slot of Conic-Column Grain

Author: ZouJianFeng
Tutor: ZuoYe
School: Harbin Engineering University
Course: Aerospace Propulsion Theory and Engineering
Keywords: Turbulence model Nusselt number CHARGE DESIGN Two-phase flow
CLC: V430
Type: Master's thesis
Year: 2006
Downloads: 72
Quote: 0
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Abstract


Cone columnar grain in the head or tail of the grain open ring groove . Ignition airflow under different flow conditions will affect the distribution of flow field and temperature field in the annular groove , thereby affecting the heat transfer between the hot air and the surface of the charge , and ultimately affect the tank propellant thermal decomposition . To learn more about the ignition airflow in the annular groove of the behavior of the papers computational fluid dynamics the software Fluent6.2 of the ignition airflow around the in 2D axisymmetric cone columnar grain to the annular groove of the flow field and the surface of the charge numerical heat transfer studies . The main contents include the following four aspects : ( 1) using the standard k-ε turbulence model and DTRM radiation heat transfer model numerical study of the flow field and heat transfer phenomena to the annular groove on the front and rear ; ( 2 ) does not consider the radiation heat transfer impact , numerical study of the standard k-ε turbulence model on the front and back to the annular groove of the convective heat transfer phenomena ; (3) by the swirl number of the former to the annular groove of the flow field and heat transfer using the Reynolds stress model (RSM) the effect of S RNGk-ε turbulence model and numerical studies after the annular groove of the flow field and heat transfer by the swirl number S ; ( 4) the use of hybrid multiphase flow model and the standard k- ε turbulence model is compatible to the annular groove of the front and rear solid integral distribution of numerical studies . In the calculation process , the flow field is time-independent , and the ignition air density is constant . The calculation results show that the surface of the charge and the total heat transfer of the hot gas stream to flow with a Reynolds number increases with increasing , but the proportion of total heat flux per unit area on a different surface radiant heat flux into a different trend ; solid phase the annular groove presents a different distribution of particles in the front and rear , but is closely related with the respective tank flow field . The entire calculation can charge design reference.

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CLC: > Aviation, aerospace > Aerospace ( Astronauts ) > Propulsion system ( engine, propeller ) > Engine theory and computing
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