Path: ACPro/RDE
% RDE model with a turbocharger.
RDE model utilizing a turbo-pump or turbocharger that compresses flow
so that the RDE can operate in low Mach. The model calculates a transition
transition point and shuts off the pump accordingly. The default fuel
is hydrogen.
Chapman-Jouguet(CJ) conditions refer to the detonation wave in the
combustion chamber. In the RDE this detonation
wave revolves around the central axis of the burner.
The function uses array index j to fill the turbopump part of ts, iSp,
and t, then fills second part.
This function needs Cantera and the SDToolbox. Find Cantera here:
https://cantera.org/install/index.html
and the SDToolbox (Shock and Detonation Toolbox) here:
http://shepherd.caltech.edu/EDL/PublicResources/sdt/
You must install both. If Cantera is not installed, you will get the
error:
Undefined function or variable 'Solution'.
Error in CJspeed (line 25)
gas1 = Solution(mech);
If the SDToolbox is not installed it will not find CJspeed.
Type HyperRDE for a demo.
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Form:
[tS, iSp, t] = HyperRDE( m, d, p )
d = HyperRDE;
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Inputs
------
m (1,:) Mach number
d (.) Data structure
.gamma (1,1) Specific heat ratio of air
.cP (1,1) Specific heat of air
.qR (1,1) Heating value of the fuel
.mDotO2 (1,1) O2 mass flow (kg/s)
.aInlet (1,1) Inlet area (m^2)
.piC (1,1) Compressor pressure ratio
.TurboPump (1,1) Data structure for TurboPump
.nB (1,1) Burner efficiency factor
p (.) Atmosphere structure
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Outputs
-------
tS (1,:) Specific thrust (N/(kg/s)) or (m/s)
iSp (1,:) Specific impulse (s)
t (1,:) Thrust (N)
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References: Shepherd, J.E. and Kasahara, J. (2017) "Analytical Models
for the Thrust of a Rotating Detonation Engine.
GALCITFM, FM2017.001. , Pasadena CA. (Unpublished)
Shepherd, Josheph E. California Institute of Technology,
"Shock and Detonation Toolbox"
http://shepherd.caltech.edu/EDL/PublicResources/sdt/
Copyright (c) 1993-2019
Mattingly, Jack D. "Elements of Gas Turbine Propulsion AIAA
Education Series" American Institute of Aeronautics and
Astronautics, 2005 pp.138 - 141
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ACPro: Airbreathing/Ramjet ACPro: Airbreathing/TurbojetNoThrust AerospaceUtils: AeroData/AtmData Common: Atmosphere/StdAtm Common: CommonData/SwooshWatermark Common: General/CellToMat Common: General/MatToCell Common: General/Watermark Common: Graphics/NewFig Common: Graphics/Plot2D Common: Graphics/PltStyle
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