Show simple item record

dc.contributor.authorTran, Kathleenen_US
dc.date.accessioned2014-03-14T20:30:18Z
dc.date.available2014-03-14T20:30:18Z
dc.date.issued2010-12-08en_US
dc.identifier.otheretd-01082011-100759en_US
dc.identifier.urihttp://hdl.handle.net/10919/30857
dc.description.abstractOne-Dimensional modeling of dual mode scramjet and ramjet flowpaths is a useful tool for scramjet conceptual design and wind tunnel testing. In this thesis, modeling tools that enable detailed analysis of the flow physics within the combustor are developed as part of a new one-dimensional MATLAB-based model named VTMODEL. VTMODEL divides a ramjet or scramjet flow path into four major components: inlet, isolator, combustor, and nozzle. The inlet module provides two options for supersonic inlet one-dimensional calculations; a correlation from MIL Spec 5007D, and a kinetic energy efficiency correlation. The kinetic energy efficiency correlation also enables the user to account for inlet heat transfer using a total temperature term in the equation for pressure recovery. The isolator model also provides two options for calculating the pressure rise and the isolator shock train. The first model is a combined Fanno flow and oblique shock system. The second model is a rectangular shock train correlation. The combustor module has two options for the user in regards to combustion calculations. The first option is an equilibrium calculation with a â growing combustion sphereâ combustion efficiency model, which can be used with any fuel. The second option is a non-equilibrium reduced-order hydrogen calculation which involves a mixing correlation based on Mach number and distance from the fuel injectors. This model is only usable for analysis of combustion with hydrogen fuel. Using the combustion reaction models, the combustor flow model calculates changes in Mach number and flow properties due to the combustion process and area change, using an influence coefficient method. This method iii also can take into account heat transfer, change in specific heat ratio, change in enthalpy, and other thermodynamic properties. The thesis provides a description of the flow models that were assembled to create VTMODEL. In calculated examples, flow predictions from VTMODEL were compared with experimental data obtained in the University of Virginia supersonic combustion wind tunnel, and with reported results from the scramjet models SSCREAM and RJPA. Results compared well with the experiment and models, and showed the capabilities provided by VTMODEL.en_US
dc.publisherVirginia Techen_US
dc.relation.haspartTran_KN_T_2010_Copyright.pdfen_US
dc.relation.haspartTran_KN_T_2010.pdfen_US
dc.rightsI hereby certify that, if appropriate, I have obtained and attached hereto a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dissertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. I hereby grant to Virginia Tech or its agents the non-exclusive license to archive and make accessible, under the conditions specified below, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report.en_US
dc.subjectHypersonic Propulsionen_US
dc.subjectOne Dimensional Modelingen_US
dc.subjectScramjetsen_US
dc.subjectDual-Mode Scramjetsen_US
dc.titleOne Dimensional Analysis Program for Scramjet and Ramjet Flowpathsen_US
dc.typeThesisen_US
dc.contributor.departmentMechanical Engineeringen_US
dc.description.degreeMaster of Scienceen_US
thesis.degree.nameMaster of Scienceen_US
thesis.degree.levelmastersen_US
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen_US
thesis.degree.disciplineMechanical Engineeringen_US
dc.contributor.committeechairO'Brien, Walter F. Jr.en_US
dc.contributor.committeememberPaul, Mark R.en_US
dc.contributor.committeememberSchetz, Joseph A.en_US
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-01082011-100759/en_US
dc.date.sdate2011-01-08en_US
dc.date.rdate2011-02-03
dc.date.adate2011-02-03en_US


Files in this item

Thumbnail
Thumbnail

This item appears in the following Collection(s)

Show simple item record