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Journal articles on the topic 'Underhood flow'

Author: Grafiati
Published: 4 June 2021
Last updated: 10 February 2022

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1

Lukeman, Yusoff, Fang Yau Lim, Shahrir Abdullah, Zulkifli R., A. Shamsudeen, and Mohammad Khatim Hasan. "Underhood Fluid Flow and Thermal Analysis for Passenger Vehicle." Applied Mechanics and Materials 165 (April 2012): 150–54. http://dx.doi.org/10.4028/www.scientific.net/amm.165.150.

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The present paper reports a simulation study of the fluid flow and thermal phenomena in the passenger vehicle underhood compartment by analysing velocity magnitude, temperature, radiator heat transfer rate and heat transfer efficiency. Analyses are carried out on a half cut passenger vehicle sample model by using commercial computational fluid dynamics (CFD) software, Star CCM+. Total volume meshes of the model are 24 451 759 cells, and the speed of the car is 0.036, 40, 70, 110, 130 and 213 km/h. Investigation are performed for three dimensional conditions, steady state gas with segregated fl
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2

Chaudhari, Parag, Jose Magalhaes, and Aparna Salunkhe. "Two-step computational aeroacoustics approach for underhood cooling fan application." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 263, no. 3 (August 1, 2021): 3615–24. http://dx.doi.org/10.3397/in-2021-2467.

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Aeroacoustic noise is one of the important characteristics of the fan design. Computational Aeroacoustics (CAA) can provide better design options without relying on physical prototypes and reduce the development time and cost. There are two ways of performing CAA analysis; one-step and two-step approach. In one-step CAA, air flow and acoustic analysis are carried out in a single software. In two-step approach, air flow and acoustic analysis are carried out in separate software. Two-step CAA approach can expedite the calculation process and can be implemented in larger and complex domain proble
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3

Huang, K. D., and S. C. Tzeng. "Optimization of size of vehicle and flow domain for underhood airflow simulation." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 218, no. 9 (September 2004): 945–51. http://dx.doi.org/10.1243/0954407041856728.

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4

Chen, Kuo-Huey, James Johnson, Parviz Merati, and Charles Davis. "Numerical Investigation of Buoyancy-Driven Flow in a Simplified Underhood with Open Enclosure." SAE International Journal of Passenger Cars - Mechanical Systems 6, no. 2 (April 8, 2013): 805–16. http://dx.doi.org/10.4271/2013-01-0842.

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5

Öztürk, İlhan, Cenk Çetin, and Mehmet Metin Yavuz. "Effect of fan and shroud configurations on underhood flow characteristics of an agricultural tractor." Engineering Applications of Computational Fluid Mechanics 13, no. 1 (January 1, 2019): 506–18. http://dx.doi.org/10.1080/19942060.2019.1617192.

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6

Bolehovský, Ondřej, and Jan Novotný. "Influence of Underhood Flow on Engine Cooling Using 1-D And 3-D Approach." Journal of Middle European Construction and Design of Cars 13, no. 3 (December 1, 2015): 24–32. http://dx.doi.org/10.1515/mecdc-2015-0012.

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Shrnutí Tato prace se zabyva numerickou simulaci kompletniho systemu chlazeni spalovaciho motoru (GT-SUITE), ktera zahrnuje i simulaci prouděni v motorovem prostoru pomoci vypočetně nenaročne simulace. Podrobny model spalovaciho motoru je rozšiřen o model chladiciho okruhu a ten je pote spojen se zjednodušenym modelem motoroveho prostoru, ktery je pomoci aplikace GT-COOL vytvořen jako 3-D model a pote přeložen do 1-D podoby. Ve dvou ustalenych režimech odpovidajicich různe rychlosti jizdy vozidla a zatiženi motoru byly zkoumany přistupy pomoci 1-D řešeni řazeni tepelnych vyměniků a zminěneho 3
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7

Khaled, Mahmoud, Fabien Harambat, and Hassan Peerhossaini. "Temperature and Heat Flux Behavior of Complex Flows in Car Underhood Compartment." Heat Transfer Engineering 31, no. 13 (November 2010): 1057–67. http://dx.doi.org/10.1080/01457631003640321.

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8

Khaled, Mahmoud, Charbel Habchi, Fabien Harambat, Ahmed Elmarakbi, and Hassan Peerhossaini. "Leakage effects in car underhood aerothermal management: temperature and heat flux analysis." Heat and Mass Transfer 50, no. 10 (April 22, 2014): 1455–64. http://dx.doi.org/10.1007/s00231-014-1347-8.

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9

Ou, Jia-Jie, Li-Fu Li, Tao Cui, and Zi-Ming Chen. "Application of field synergy principle to analysis of flow field in underhood of LPG bus." Computers & Fluids 103 (November 2014): 186–92. http://dx.doi.org/10.1016/j.compfluid.2014.07.029.

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10

Lu, Pengyu, Qing Gao, Liang Lv, Xiaoye Xue, and Yan Wang. "Numerical Calculation Method of Model Predictive Control for Integrated Vehicle Thermal Management Based on Underhood Coupling Thermal Transmission." Energies 12, no. 2 (January 15, 2019): 259. http://dx.doi.org/10.3390/en12020259.

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The nonlinear model predictive control (NMPC) controller is designed for an engine cooling system and aims to control the pump speed and fan speed according to the thermal load, vehicle speed, and ambient temperature in real time with respect to the coolant temperature and comprehensive energy consumption of the system, which serve as the targets. The system control model is connected to the underhood computational fluid dynamics (CFD) model by the coupling thermal transmission equation. For the intricate thermal management process predictive control and system control performance analysis, a
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11

Matsumoto, Daiki, Lukas Haag, and Thomas Indinger. "Investigation of the Unsteady External and Underhood Airflow of the DrivAer model by Dynamic Mode Decomposition Methods." International Journal of Automotive Engineering 8, no. 2 (2017): 55–62. http://dx.doi.org/10.20485/jsaeijae.8.2_55.

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12

Khaled, Mahmoud, Fareed Mangi, Hisham El Hage, Fabien Harambat, and Hassan Peerhossaini. "Fan air flow analysis and heat transfer enhancement of vehicle underhood cooling system – Towards a new control approach for fuel consumption reduction." Applied Energy 91, no. 1 (March 2012): 439–50. http://dx.doi.org/10.1016/j.apenergy.2011.10.017.

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13

Minovski, Blago, Lennart Löfdahl, Jelena Andrić, and Peter Gullberg. "A Coupled 1D–3D Numerical Method for Buoyancy-Driven Heat Transfer in a Generic Engine Bay." Energies 12, no. 21 (October 31, 2019): 4156. http://dx.doi.org/10.3390/en12214156.

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Energy efficient vehicles are essential for a sustainable society and all car manufacturers are working on improved energy efficiency in their fleets. In this process, an optimization of aerodynamics and thermal management is most essential. The objective of this work is to improve the energy efficiency using encapsulated heat generating units by focusing on predicting temperature distribution inside an engine bay. The overall objective is to make an estimate of the generated heat inside an encapsulation and consecutively use this heat for climatization purposes. The study presents a detailed
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14

Ng, E. Y., P. W. Johnson, and S. Watkins. "An analytical study on heat transfer performance of radiators with non-uniform airflow distribution." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 219, no. 12 (December 1, 2005): 1451–67. http://dx.doi.org/10.1243/095440705x35116.

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Heat exchangers used in modern automobiles usually have a highly non-uniform air velocity distribution because of the complexity of the engine compartment and underhood flow fields; hence ineffective use of the core area has been noted. To adequately predict the heat transfer performance in typical car radiators, a generalized analytical model accounting for airflow maldistribution was developed using a finite element approach and applying appropriate heat transfer equations including the ε-NTU (effectiveness - number of heat transfer units) method with the Davenport correlation for the air-si
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15

Karim, Razak, and Anita Kusrima. "Kajian Karakteristik Fisik Dan Mekanik Pastefill Yang Digunakan Pada Penambangan Emas Bawah Tanah Metode Cut And Fill Di PT. Nusa Halmahera Minerals–Gosowong Halmahera." Prosiding Temu Profesi Tahunan PERHAPI 1, no. 1 (September 4, 2018): 337–48. http://dx.doi.org/10.36986/ptptp.v0i0.33.

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PT. Nusa Halmahera Minerals (NHM) merupakan perusahaan pertambangan emas yang beroperasi di daerah Kencana Gosowong Desa Tabobo Kecamatan Malifut Kabupaten Halmahera Utara Provinsi Maluku Utara. Dari hasil evaluasi, metode Underhand Cut and Fill (UCF) dipilih karena beberapa pertimbangan ; cash flow rendah, recovery tinggi, dan lebih aman saat berhadapan dengan kondisi batuan yang buruk. Namun permasalahan yang dihadapi adalah mengenai kekuatan material backfill jenis pastefill yang digunakan untuk bertindak sebagai atap dan dinding terowongan produksi bagi para pekerja dan peralatan yang bera
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16

Merati, Parviz, Charles Davis, K. H. Chen, and J. P. Johnson. "Underhood Buoyancy Driven Flow—An Experimental Study." Journal of Heat Transfer 133, no. 8 (May 4, 2011). http://dx.doi.org/10.1115/1.4003758.

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Particle image velocimetry and thermal measurements using thermocouples are used to measure the buoyant flow of a simplified full-scale model of an engine compartment. The engine block surface temperature and exhaust heaters are kept at about 100 and 600°C, respectively. Thermal measurements include enclosure surface temperature, temperature difference on the enclosure wall at midplane, engine block temperatures, and air temperatures under the hood. The highest surface temperatures were concentrated near the top of the enclosure around the exhaust heaters. This effect was due primarily to radi
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17

Khaled, Mahmoud, Fabien Harambat, and Hassan Peerhossaini. "A Quantitative Method for Assessment of Car Inclination Effects on Thermal Management of the Underhood Compartment." Journal of Thermal Science and Engineering Applications 1, no. 1 (March 1, 2009). http://dx.doi.org/10.1115/1.3159477.

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The study presented here concerns the impact of car inclination on the temperatures in the vehicle underhood compartment. We report here underhood thermal measurements carried out on a vehicle in wind tunnel S4 of Saint-Cyr, France. The underhood is instrumented by 80 surface and air thermocouples. Measurements are carried out for three different thermal charges (thermal functioning points). During tests, the engine is in operation, and the front wheels positioned on the test facility equipped with rollers, permitting the wheel power and rotational speed control. Three car inclinations are tes
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18

Langmayr, D., R. A. Almbauer, N. Peller, W. Puntigam, and A. Lichtenberger. "Calibrated Coarse Grid-Finite Volume Method for the Fast Calculation of the Underhood Flow of a Vehicle." Journal of Fluids Engineering 135, no. 10 (August 6, 2013). http://dx.doi.org/10.1115/1.4024749.

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In this paper we introduce a novel method for calculating 3D flow through the underhood compartement of a vehicle. The method is based on the system of Euler equations, which are numerically solved by a finite volume approach. The total number of finite volumes is very low (<1000 cells). The applied numerics are calibrated to recapture a preceding detailed computational fluid dynamics {CFD) simulation. This calibration is established by two sets of factors. The main advantage of the present approach is that the calibration factors can be inter- and extrapolated between different CFD simulat
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