Generic hypersonic inlet module analysis

Abstract

A computational study associated with an internal inlet drag analysis was performed for a generic hypersonic inlet module. The purpose of this study was to determine the feasibility of computing the internal drag force for a generic scramjet engine module using computational methods. The computational study consisted of obtaining two-dimensional (2D) and threedimensional (3D) computational fluid dynamics (CFD) solutions using the Euler and parabolized Navier-Stokes (PNS) equations. The solution accuracy was assessed by comparisons with experimental pitot pressure data. The CFD analysis indicates that the 3D PNS solutions show the best agreement with experimental pitot pressure data. The internal inlet drag analysis consisted of obtaining drag force predictions based on experimental data and 3D CFD solutions. A comparative assessment of each of the drag prediction methods is made and the sensitivity of CFD drag values to computational procedures is documented. The analysis indicates that the CFD drag predictions are highly sensitive to the computational procedure used.

A Bayesian Approach to Non-Deterministic Hypersonic Vehicle Design

“…Yet Blankson et al discuss the "inability of ground facilities to generate hypersonic test data at real flight conditions for validating design tools" [15]. The tendency of flight test data "to raise more questions than answers" compounds the problem [16].…”

A new approach for the design of hypersonic scramjet inlets

“…17 CFD has evolved up to an extent where complex phenomenon of hypersonic propulsions can be modeled and these CFD simulations have become important means to study the physics of scramjet engines. [18][19][20][21][22][23] Various numerical techniques have been used to analyze the scramjet propulsion such as large eddy simulation to model the jet injection in scramjet combustion chamber. 24 However, research has been done by either optimizing total pressure recovery or prescribing Mach number at the beginning of isolator.…”