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Mathematical Simulation of Using a Combination of Mesh and Porous Materials as a Phase Separator

Authors: Avraamov N.I., Korolkov A.V., Maslov V.A., Sapozhnikov V.B. Published: 19.07.2019
Published in issue: #3(126)/2019  

DOI: 10.18698/0236-3941-2019-3-4-16

 
Category: Aviation and Rocket-Space Engineering | Chapter: Aircrafts Development, Design and Manufacture  
Keywords: mathematical simulation, combination of mesh and porous materials, bulk capillary properties, phase separator, in-tank inlet devices, critical retention capacity, residual propellant

A combination of mesh and porous materials featuring bulk capillary properties is used as a phase separator in in-tank capillary inlet devices. These bulk capillary properties ensure a non-zero fluid flow into the interior of the in-tank inlet device after critical pressure has been reached. This quality makes it possible to reduce residual propellant volume in spacecraft engine tanks. We developed a mathematical simulation of an in-tank capillary inlet device comprising a phase separator made of a combination of mesh and porous materials. We represented a combination of mesh and porous materials as an array of "closely packed" transverse and longitudinal capillaries. Our mathematical simulation describes the operation of an in-tank inlet device after the critical manifold pressure has been reached. The fluid enters the interior of the in-tank inlet device one portion at a time. We determined the volume and arrival frequency of these portions and estimated the residual propellant volume in the propellant tank

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