Flow Field and Thermal Management Analysis of an Armored Vehicle Engine Compartment

2004 ◽  
pp. 385-409
Author(s):  
Robert F. Kunz ◽  
Nameer Salman
Keyword(s):  
Flow Field ◽  
Thermal Management ◽  
Engine Compartment ◽  
Vehicle Engine ◽  
Armored Vehicle

scholarly journals Heat exchange performance optimization of a wheel loader cooling system based on computational fluid dynamic simulation

2018 ◽  
Vol 10 (11) ◽  
pp. 168781401880398 ◽  
Author(s):  
Chao Yu ◽  
Sicheng Qin ◽  
Yang Liu ◽  
Bosen Chai
Keyword(s):  
Heat Exchange ◽  
Flow Field ◽  
Thermal Management ◽  
Cooling System ◽  
Management Model ◽  
Maximum Deviation ◽  
Engine Compartment ◽  
Wheel Loader ◽  
Exchange Performance ◽  
Transmission Oil

This study establishes a thermal management model to improve the heat exchange performance and uniformity of the flow-field distribution in the engine compartment of a wheel loader. Flow-field analyses are performed for an XG956 wheel loader in a virtual wind tunnel using the combined engine compartment thermal management model and computational fluid dynamics. The Fluent calculations revealed various problems. For example, the inlet flow rate at both sides of the engine compartment is small, which accounts for about 8.5% of the total flow, and the flow uniformity of radiator becomes worse with the increase in the air flow. The original cooling system is improved based on the simulation results and then verified by field testing. A comparison of the test data with the simulations indicates that the values obtained using the thermal management model of the engine compartment are largely in agreement with the experimental values, with a maximum deviation of the heat transfer rate at the rated speed of 5.1%. The research method presented in this article could further help to increase the productivity of the non-road mobile machinery cooling system and lower design costs. The temperature of pressurized air, hydraulic oil, transmission oil, and engine cooling fluid decreased by 22.5%, 8.7%, 2.2%, and 8.4% in the improved loader, respectively.

scholarly journals The DESIGN OF FIBER METAL LAMINATE AS A BODY MATERIAL WITH CARBON FIBER METHOD

2021 ◽  
Vol 2 (Oktober) ◽  
pp. 50-56
Author(s):  
Muhammad Juliansyah Winarto ◽  
Lalu Saefullah ◽  
Willem Loe Mau
Keyword(s):  
Composite Material ◽  
Carbon Fiber ◽  
The Body ◽  
Vehicle Body ◽  
Vehicle Engine ◽  
Steel Material ◽  
Fiber Metal Laminate ◽  
Combat Vehicle ◽  
Fiber Metal ◽  
Armored Vehicle

The combat vehicles that Indonesia Army belong to most of the materials are steel, for example the armored vehicle anoa 6x6. Steel material is used as a fire protection on the vehicle, it will greatly affect the performance of the vehicle. It is caused the steel material has a high density, which is around 7750 kg/m3to 8050 kg/m3. So, with a large enough volume of the vehicle body, it will increase the burden of the vehicle. As well as the engine load will increase, and more power is needed to be able to move the vehicle. Seeing these problems, it is necessary to have a research or study on alternative materials to replace the body of a combat vehicle that can withstand fire from opposing weapons that cause personnel to be injured. In this study, experimental and simulation methods were used using the ansys application to analyze the strength of the composite material in the form of an aluminum layer that had been treated to increase the hardness value. Furthermore, it is coated with a composite material using a carbon fiber matrix of epoxy, HGM and polyurethane. The coating material is called Fiber Metal Laminate (FML), so the material used has a lighter density, the load received by the vehicle engine is lighter, and the performance of the vehicle will be more effective and efficient.

Microwave Propagation Channel Modeling in a Vehicle Engine Compartment

2016 ◽  
Vol 65 (9) ◽  
pp. 6831-6841 ◽  
Author(s):  
Hirokazu Kamoda ◽  
Shoichi Kitazawa ◽  
Naoya Kukutsu ◽  
Kiyoshi Kobayashi ◽  
Tomoaki Kumagai
Keyword(s):  
Channel Modeling ◽  
Engine Compartment ◽  
Propagation Channel ◽  
Microwave Propagation ◽  
Vehicle Engine

Finite Element Analysis of a Certain Tracked Vehicle Engine Compartment Test-Bed Support

2012 ◽  
Vol 424-425 ◽  
pp. 1191-1194
Author(s):  
De Li Cui ◽  
Kuo Jiang ◽  
Su Li Feng ◽  
Xu Hua Zhai
Keyword(s):  
Finite Element Analysis ◽  
Strain State ◽  
Engine Compartment ◽  
Test Bed ◽  
Operation Condition ◽  
Tracked Vehicle ◽  
Element Analysis ◽  
Vehicle Engine ◽  
D Model ◽  
Model Strain

This paper uses solidworks software to build 3-D model of a certain tracked vehicle engine compartment test-bed support, then analyzed the model strain state and mode under typical operation condition by ANSYS. It is calculated that the support can meet the design demand.

scholarly journals Comparative Study on CFD Turbulence Models for the Flow Field in Air Cooled Radiator

Processes ◽  
2020 ◽  
Vol 8 (12) ◽  
pp. 1687
Author(s):  
Chao Yu ◽  
Xiangyao Xue ◽  
Kui Shi ◽  
Mingzhen Shao ◽  
Yang Liu
Keyword(s):  
Flow Field ◽  
Transient Flow ◽  
Three Dimensional ◽  
Turbulence Models ◽  
Compartment Model ◽  
Navier Stokes ◽  
Engine Compartment ◽  
Detached Eddy Simulation ◽  
Eddy Simulation ◽  
Relevant Calculation

This paper compares the performances of three Computational Fluid Dynamics (CFD) turbulence models, Reynolds Average Navier-Stokes (RANS), Detached Eddy Simulation (DES), and Large Eddy Simulation (LES), for simulating the flow field of a wheel loader engine compartment. The distributions of pressure fields, velocity fields, and vortex structures in a hybrid-grided engine compartment model are analyzed. The result reveals that the LES and DES can capture the detachment and breakage of the trailing edge more abundantly and meticulously than RANS. Additionally, by comparing the relevant calculation time, the feasibility of the DES model is proved to simulate the three-dimensional unsteady flow of engine compartment efficiently and accurately. This paper aims to provide a guiding idea for simulating the transient flow field in the engine compartment, which could serve as a theoretical basis for optimizing and improving the layout of the components of the engine compartment.

The State Assessment of Armored Vehicle Engine Based on Analytic Hierarchy Process and Fuzzy Synthetic Evaluation

2014 ◽  
Vol 988 ◽  
pp. 606-610
Author(s):  
Lian Jun Zhu ◽  
Hua Cong
Keyword(s):  
Analytic Hierarchy Process ◽  
Evaluation Method ◽  
The State ◽  
Condition Based Maintenance ◽  
Fuzzy Synthetic Evaluation ◽  
Analytic Hierarchy ◽  
Vehicle Engine ◽  
Armored Vehicle ◽  
Hierarchy Process ◽  
Synthetic Evaluation

The maintenance way of armored vehicle engine is hard time maintenance and breakdown maintenance in our army. So, the situation of lack or excess of maintenance is often existing in armored vehicle engine, and leading to potential safety hazard and wasting of resources. Condition based maintenance, which based on advanced detect and diagnosis technology, is a good way to solve the problems mentioned above. So, parameter tables which can completely reflect the state of armored vehicle engine is set up in this paper, and analytic hierarchy process and fuzzy synthetic evaluation method is used to scientific assess the state of vehicle engine. The computational process is demonstrated by analysis the experiment data of an armored vehicle engine. The work gives the foundation for condition based maintenance of armored vehicle engine.

Study on Analytical Method for Thermal and Flow Field of a Turbocharger With the Catalyst Unit

2019 ◽  
Author(s):  
Tsuyoshi Kitamura ◽  
Seiichi Ibaraki ◽  
Yuichi Kihara ◽  
Toru Hoshi ◽  
Motoki Ebisu
Keyword(s):  
Heat Transfer ◽  
Experimental Data ◽  
Experimental Study ◽  
Flow Field ◽  
Thermal Management ◽  
Analytical Method ◽  
Conjugate Heat Transfer ◽  
Downstream Side ◽  
Mutual Dependence ◽  
Start Up

Abstract The analytical and experimental study on thermal and flow field of a turbocharger with the catalyst unit has been conducted for the thermal management at the downstream side of turbochargers, which have crucial effects on activation of catalyst units. CHT (Conjugate Heat Transfer) calculations, working for simulating heat transfer with mutual dependence between solid structures and fluid, are applied to the turbocharger including the turbine section, the bearing housing and the catalyst unit to acquire the whole of thermal and flow field accurately. The modeling for catalyst element has also been developed. In addition, the gas stand test demonstrated turbochargers under cold start-up condition to validate CHT calculations. Analytical results are evaluated against experimental data. Eventually, the proposed analytical method has been proved to have the advantage of designing for heating catalyst units.

The Prediction of the Maintainability of Armored Vehicle Engine Based on Failure Model Effectiveness Analysis

2014 ◽  
Vol 988 ◽  
pp. 601-605
Author(s):  
Lian Jun Zhu ◽  
Hua Cong
Keyword(s):  
Characteristic Parameter ◽  
Condition Based Maintenance ◽  
Failure Model ◽  
Analytic Hierarchy ◽  
Vehicle Engine ◽  
Factors Analysis ◽  
Effectiveness Analysis ◽  
Parameter Test ◽  
Armored Vehicle ◽  
Hierarchy Process

Maintainability is an important factor need to be considered in the strategy making process of armored vehicle engine. Combined with the factors analysis of the maintainability, fuzzy analytic hierarchy process (FAHP) is used to realize the reasonable evaluation of the engine maintainability based on failure model effectiveness analysis (FMEA) and the characteristic parameter test. The research provides a basis for the condition based maintenance of armored vehicle engine.

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