scholarly journals CFD and Thermal Analysis of Exhaust Manifold and Exhaust Header for a 6 Cylinder Inline Engine: A Review

2021 ◽  
Vol 9 (10) ◽  
pp. 771-775
Author(s):  
Shaikh Usama
Keyword(s):  
Thermal Analysis ◽  
Gold Standard ◽  
Cfd Analysis ◽  
Exhaust Manifold ◽  
Ic Engine ◽  
Standard Geometry

Abstract: Exhaust Manifold and Exhaust Header is one of the important additives of IC engine for enhancing the volumetric performance. The volumetric performance of the engine may be expanded with the aid of using decreasing the backpressure and growing the exhaust pace with inside the exhaust manifold and header. These studies examine the float via unique fashions of exhaust manifold and exhaust header the use of CFD and Thermal evaluation for a 6 cylinder inline engine. The layout of exhaust manifold is changed to get gold standard geometry. The evaluation consequences of fashions are as compared for returned stress and pace of exhaust fuel line. By evaluating the consequences of fashions the lower in returned stress is located which make sure development in volumetric performance of the engine. Keywords: Exhaust Manifold, Exhaust Header, CFD Analysis, Thermal Analysis, 6-Cylinder Inline Engine

Thermal and Conjugate Heat Transfer Analysis of Exhaust Manifold of Multi-cylinder IC Engine

2021 ◽  
Vol 13 (4) ◽  
Author(s):  
T. Dara Sai Pradeep ◽  
Micha Premkumar ◽  
C. Krishna Kishore ◽  
P. Mahesh ◽  
Kollu Surya Kiran ◽  
...  
Keyword(s):  
Thermal Analysis ◽  
Heat Flux ◽  
Silicon Nitride ◽  
Elevated Temperatures ◽  
Catalytic Converter ◽  
Heat Transfer Analysis ◽  
Design Stage ◽  
Exhaust Manifold ◽  
Stress Concentrations ◽  
Ic Engine

The exhaust manifold of multi cylinder IC engine is kept in between the engine block and the catalytic converter. So the exhaust manifold is exposed to very high temperature and care should be taken at the critical zone during the design stage. At several critical zones of the exhaust manifold, large compressive deformations are generated at elevated temperatures and tensile stresses remain at cold conditions. The thermal analysis will help in estimating the deformations and stress concentrations due to thermal loads. Therefore, the main aim of this study is to perform thermal analysis and conjugate heat flow analysis of an exhaust manifold of a multi-cylinder engine. The 3D model is generated using SolidWorks and analysis is carried out using Ansys workbench. Materials like grey C.I., aluminium nitride, silicon nitride, and stainless steel are used in this analysis. The results of total heat flux, directional heat flux and temperature distribution were compared. Silicon nitride material is suggested to be the suitable material for engine exhaust manifolds based on the material mechanical properties and thermal distribution-related thermal stress developed on the exhaust manifold.

scholarly journals Improving the Heat Transfer Rate of Air Conditioning Condenser by Material Optimization

2021 ◽  
pp. 39-50
Author(s):  
A. A. Adegbola ◽  
O. A. Adeaga ◽  
A. O. Babalola ◽  
A. O. Oladejo ◽  
A. S. Alabi
Keyword(s):  
Heat Transfer ◽  
Thermal Analysis ◽  
Heat Flux ◽  
Flow Rate ◽  
Transfer Rate ◽  
Air Conditioning ◽  
Static Pressure ◽  
Cfd Analysis ◽  
Condenser Tube ◽  
Total Heat Transfer

Air conditioning systems have condensers that remove unwanted heat from the refrigerant and transfer the heat outdoors. The optimization of the global exploit of heat exchanging devices is still a burdensome task due to different design parameters involved. There is need for more and substantial research into bettering cooling channel materials so as to ensure elevated performance, better efficiency, greater accuracy, long lasting and low cost heat exchanging. The aim of this research work is to improve the heat transfer rate of air conditioning condenser by optimizing materials for different tube diameters. Simulations using thermal analysis and Computational Fluid Dynamic (CFD) analysis were carried out to determine the better material and fluid respectively. The analysis was done using Analysis System software. Different parameters were calculated from the results obtained and graphs are plotted between various parameters such as heat flux, static pressure, velocity, mass flow rate and total heat transfer. The materials used for CFD analysis are R12 and R22, and for thermal analysis are copper and aluminium. From the CFD analysis, the result shows that R22 has more static pressure, velocity, mass flow rate and total heat transfer than R12 at condenser tube diameter 6 mm. In thermal investigation, the heat flux is more for copper material at condenser tube diameter 6 mm. Copper offers maximum heat flux. Also, refrigerant R22 scores maximum for the heat transfer criteria, but cannot be recommended due to toxicity

Design and thermal analysis of coated and uncoated exhaust manifold

2018 ◽  
Vol 41 (2) ◽  
pp. 157-160 ◽  
Author(s):  
T. N. Valarmathi ◽  
S. Sekar ◽  
M. Purusothaman ◽  
J. Saravanan ◽  
K. N. Balan ◽  
...  
Keyword(s):  
Thermal Analysis ◽  
Exhaust Manifold

CFD Analysis of a Liquid Cooled Exhaust Manifold

2002 ◽  
Author(s):  
Kevin Scheeringa ◽  
Doug Schwerin ◽  
Bob Groves ◽  
Chenn Zhou ◽  
Jim Majdak ◽  
...  
Keyword(s):  
Cfd Analysis ◽  
Exhaust Manifold

Design and Validation of New Exhaust Manifold for 3.8 L Turbocharged-Intercooled Diesel Engine

2006 ◽  
Author(s):  
Tejsing A. Gaikwad
Keyword(s):  
Thermal Analysis ◽  
Diesel Engine ◽  
Pressure Drop ◽  
Experimental Method ◽  
Flow Pattern ◽  
Comparative Method ◽  
Exhaust Manifold ◽  
Degree Polynomial ◽  
Profile Design ◽  
And Performance

Few Engine Layout and Performance related concerns made way for design and development of new Exhaust Manifold (EM). New EM is designed using 5th degree Polynomial Profile Design (PPD) technology. Existing EM is tested to measure various parameters such as flow pattern, pressure drop across manifold and on skins temperature mappings. Two approaches were studied to validate new EM on the basis of results obtained by CFD and Thermal Analysis as follows, 1. Comparative Method. 2. Experimental Method. The paper aims at presenting the above design and validation approaches for upcoming EM designs.

The Use of CFD for the Thermal Analysis of a High Pressure Compressor Rotor

2004 ◽  
Author(s):  
U. W. Ruedel ◽  
J. R. Turner
Keyword(s):  
Thermal Analysis ◽  
High Pressure ◽  
Temperature Distribution ◽  
Flow Field ◽  
Transient Temperature ◽  
Temperature Profiles ◽  
Cfd Analysis ◽  
Compressor Rotor ◽  
High Pressure Compressor ◽  
Pressure Compressor

The prediction of fatigue life of components inside aircraft engines depends on the reliable numerical modelling of the temperature distribution during a mission cycle as this gives rise to life limiting thermal stresses. The transient temperature distribution is usually measured during an engine test and is then used to validate the numerical model, which in turn produces the basis for calculating the thermal stress levels. This paper describes the thermal analysis of a High Pressure Compressor Rotor (HPCR) and how the use of a 3-D Computational Fluid Dynamic (CFD) analysis improved the quantitative agreement between the measured and the predicted temperature profiles. The highly complex three-dimensional flow field within the compressor rotor was modelled by exploiting symmetry conditions and using a standard k-ε turbulence model. Results of the tangential, axial and radial velocity components as well as locations of peaks in turbulence kinetic energy were predicted to help identify the flow field inside the forward cavity of the rotor. Two ways of predicting internal re-circulating rates to the rim area are proposed. Finally, plots of predicted metal temperature profiles before and after the CFD-analysis are presented.

scholarly journals Modeling and Analysis of Piston using Various Piston Crown Geometries

2020 ◽  
Vol 9 (5) ◽  
pp. 1004-1012
Keyword(s):  
Thermal Analysis ◽  
Maximum Shear Stress ◽  
Three Dimensional ◽  
Thermal Loads ◽  
Ic Engine ◽  
Modeling And Analysis ◽  
Engine Piston ◽  
Piston Crown ◽  
Stress Maximum ◽  
The Impact

Piston is the essential part of an IC engine and due to increase in manufacturing of automobiles of various types based on performance and power, the piston of an IC engine is under significant stress which causes wear of the piston. Piston is under mechanical and thermal loads due to combustion of the fuel and generation of high pressure gases. To reduce the damage incurred on an IC piston by the combustion of fuel the crown geometry of the piston can be modified. This reduces the wear incurred on an IC engine piston and increases the life of the IC engine piston. To understand the impact of mechanical loads on the piston static structural analysis has to be performed and to understand the impact of thermal loads, thermal analysis has to be performed. In this paper we have modeled three dimensional pistons with four different crown geometries using CATIA and performed static structural and thermal analysis in ANSYS to find total deformation, equivalent (von-misses) stress, maximum shear stress, temperature and heat flux. So we can find the best crown geometry for the manufacturing of IC engine piston.

CFD-Analysis of Cycle Averaged Heat Flux and Engine Cooling in an IC-Engine

2005 ◽  
Author(s):  
S. Etemad ◽  
J. Wallesten ◽  
C.F. Stein ◽  
S. Eriksson ◽  
K. Johansson
Keyword(s):  
Heat Flux ◽  
Cfd Analysis ◽  
Ic Engine ◽  
Engine Cooling
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