Numerical analysis of unsteady effects in partial admittance turbine cooperating with pulse combustion chambers

2014 ◽  
Author(s):  
Rafael M. Cerpa ◽  
Janusz Piechna ◽  
Norbert Mueller
Keyword(s):  
Numerical Analysis ◽  
Combustion Chambers ◽  
Pulse Combustion ◽  
Unsteady Effects

Predicting the Performance of Diesel Engine Combustion Chambers

1969 ◽  
Vol 184 (10) ◽  
pp. 241-299 ◽  
Author(s):  
D. B. Spalding
Keyword(s):  
Heat Transfer ◽  
Diesel Engine ◽  
Numerical Analysis ◽  
Finite Difference ◽  
Fluid Dynamic ◽  
Combustion Chambers ◽  
Piston Motion ◽  
Engine Combustion ◽  
Growth Of Knowledge ◽  
Dynamic Heat Transfer

The availability of large digital computers, the recent development of adequate techniques of numerical analysis, and the growth of knowledge about the laws of turbulence, have combined to make possible the development of a comprehensive prediction procedure for the fluid-dynamic, heat transfer and combustion phenomena which take place in diesel engine combustion chambers. The difficulties, and means of surmounting them, are discussed in the lecture; it is argued that a very useful first stage would be a procedure applicable to axisymmetrical chambers; this could be constructed by extending already established techniques and knowledge. The procedure would be of the finite difference variety, and would employ a grid which expanded and contracted to accord with the piston motion.

scholarly journals Development of combustion chamber of a reference calorimeter with numerical analysis

ACTA IMEKO ◽  
2015 ◽  
Vol 4 (4) ◽  
pp. 26
Author(s):  
Jose Eli Eduardo Gonzalez-Duran ◽  
Alejandro Estrada-Baltazar ◽  
Leonel Lira-Cortes
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Numerical Modeling ◽  
Numerical Analysis ◽  
Combustion Chamber ◽  
Calorific Value ◽  
Combustion Chambers ◽  
Isoperibolic Calorimeter ◽  
Computational Fluid Dynamics Cfd ◽  
Superior Calorific Value

<p class="Abstract">The present work focuses on the numerical modeling of two combustion chambers to be used inside an isoperibolic calorimeter to measure the Superior Calorific Value (SCV) from natural gas. This work shows performance of both chambers working under isoperibolic principle, through simulations based on Computational Fluid Dynamics (CFD). The aim of the work is expose the performance of chamber combustion published in the literature versus another one proposed in this work, and show how was improved the performance of the chamber which proposed in this work by changing the geometry. And it is checked by analyzing temperature of burned gases at exit of combustion chamber.</p>

Performance and Operating Characteristics of Micro Gas Turbine Driven by Pulse, Pressure Gain Combustor

2020 ◽  
Author(s):  
Takashi Sakurai ◽  
Shunsuke Nakamura
Keyword(s):  
Combustion Chamber ◽  
Gas Turbine ◽  
Pulse Pressure ◽  
Constant Pressure ◽  
Engine Performance ◽  
Combustion Mode ◽  
Operating Characteristics ◽  
Combustion Chambers ◽  
Micro Gas Turbine ◽  
Pulse Combustion

Abstract This paper presents the experimental results of a micro gas turbine driven by pulse, pressure gain combustor. The aim of this study is to demonstrate the improvement of the engine performance by applying the pressure gain combustion. The micro gas turbine is composed of a combustor having two combustion chambers and an automotive turbocharger which is used as a compressor and a turbine. The outlets of two combustion chambers are joined by a confluence part to connect with the turbine. By changing the combustion methods of each combustion chamber, the gas turbine was operated in three modes; normal combustion mode, pulse combustion augmented mode, and fully pulse combustion mode. In the normal combustion mode, two combustion chambers were operated under continuous, constant-pressure combustion. In the pulse combustion augmented mode, one combustion chamber was operated under continuous, constant-pressure combustion and the other was operated under pulse combustion. In the fully pulse combustion mode, two combustion chambers were operated under pulse combustion. The pulse combustion applied in this study was the forced-ignition type, active pulse combustion. Although the pressure increase was attained by the pulse combustion comparing with the normal combustion, the mass-averaged pressure in the combustor showed that the net pressure gain in the combustor was not attained. The engine performance such as thermal efficiency and work and operating characteristics of gas turbine were investigated for two operation modes. In the pulse combustion augmented mode, the gas turbine could successfully sustain its operation as well as normal operation mode. The increase in the combustor pressure affected the air mass flow rate and the compressor performance, resulted in the decrease of performance comparing with the normal combustion mode.

A numerical analysis of slab heating characteristics in a rolling type reheating furnace with pulse combustion

2016 ◽  
Vol 107 ◽  
pp. 1304-1312 ◽  
Author(s):  
Y.J. Liu ◽  
J.D. Li ◽  
R.D.K. Misra ◽  
Z.D. Wang ◽  
G.D. Wang
Keyword(s):  
Numerical Analysis ◽  
Reheating Furnace ◽  
Pulse Combustion

Numerical analysis of a pulse combustion burner

1988 ◽  
Vol 21 (1) ◽  
pp. 539-546 ◽  
Author(s):  
Y. Tsujimoto ◽  
N. Machii
Keyword(s):  
Numerical Analysis ◽  
Pulse Combustion
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