DOI QR코드

DOI QR Code

A Convergent Investigation on the Air flow in Driving According to a Cargo Container and the Wind Deflector

트럭 화물칸 및 윈드 디플렉터에 따른 운행중 공기흐름에 대한 융합 연구

  • Choi, Kye-Kwang (Department of Metal Mold Design Engineering, Kongju national University) ;
  • Cho, Jae-Ung (Division of Mechanical & Automotive Engineering, Kongju National University)
  • 최계광 (공주대학교 금형설계공학과) ;
  • 조재웅 (공주대학교 기계자동차공학부)
  • Received : 2020.06.08
  • Accepted : 2020.09.20
  • Published : 2020.09.28

Abstract

In this study, the freight vehicles were modelled and the flow analysis on the existence or non-existence of a cargo container and the wind deflector were carried out. Based on the driving speed of 100 km/hr, at all models A, B and C, the highest flow rate was shown between 58 m/s and 59 m/s at the top of the model shape. All models A, B and C showed the highest pressure of air resistance between 652Pa and 671Pa at the front of the model geometry. The maximum pressure of model A is considered to be the smallest, with the least flow resistance to speed compared to models B and C. Therefore, it can be seen that model A has an advantageous condition for air resistance in terms of fuel costs. Unlike model B which causes the rapid flow resistance at the cargo compartment, model C can be found to flow a little more smoothly on the streamlined wind deflector. So, the flow air at a streamlined shape is considered to be more advantageous in terms of air resistance than at angular shape. By applying the research analysis result on the air flow in driving according to a cargo container and the wind deflector, it is seen that this study is adequate at the practical efficient design and aesthetic convergence.

본 연구에서는 화물 운송 차량들을 모델링하였고 화물 운송 차량의 화물칸 및 윈드 디플렉터의 유무에 따른 유동해석을 수행하였다. Model A, B, C 모두, 100km/hr의 운행 속도를 기준으로 하여, 모델 형상의 윗부분에서 58m/에서 59m/s 사이로 가장 높은 유동 속도가 나타났다. Model A, B, C 세 모델들 모두 모델 형상의 앞부분에서 652Pa에서 671Pa사이에 공기저항의 압력이 가장 높게 나타났다. Model A의 최대 압력은 Model B 및 C에 비하여, 작게 나타나서, 속도에 대한 유동 저항이 가장 적게 작용한 것으로 사료된다. 따라서 Model A가 유류비 측면에서 공기 저항에 대한 유리한 조건을 가짐을 알 수 있다. Model C는 화물칸에서 급격하게 유동저항이 발생하는 Model B와 달리 유선형 형상의 윈드 디플렉터를 타고 공기가 조금 더 원활하게 흐르는 것을 확인할 수 있다. 따라서 각진 형상보다 유선형의 형상에서 공기저항 측면에서는 더 유리하다고 사료된다. 트럭 화물칸 및 윈드 디플렉터에 따른 운행중 공기흐름에 대한 해석 연구 결과를 적용함으로서, 본 연구가 실제적인 효율적인 설계와 미적인 융합에 적합하다고 보인다.

Keywords

References

  1. S. W. Park, I. S. Choi, K. C. Noh, S. P. Ryu & K. S. Yoon. (2012). An Experimental Study on Measurement of Flow Coefficient Using the Steady-Flow Test Rig. Journal of the Korean Society of Marine Engineering, 36(4), 423-429. DOI : 10.5916/jkosme.2012.36.4.423
  2. D. W. Jeong, Y. S. Won & S. H. Kang. (2019). Comparison Study on Aerodynamic Performance and Wake Flow Field for a MW-Class Wind Turbine Model. Journal of the Korean Society of Visualization, 17(2), 32-38. DOI : 10.5407/jksv.2019.17.2.032
  3. H. C. Lee & J. U. Cho. (2014). A Study on Air Flow Analysis due to the Shape of Automotive Body. Journal of the Korea Convergence Society, 5(2), 19-23. DOI : 10.15207/JKCS.2014.5.2.019
  4. B. S. Oh & J. U. Cho. (2019). Convergence Study on Durability Analysis of Scooter Seat. Journal of the Korea Convergence Society, 10(6), 165-170. DOI : 10.15207/JKCS.2019.10.6.165
  5. J. H. Lee & J. U. Cho. (2015). Study on Convergence Technique through Flow Analysis at the Flexible Joint of the Pipe Laying. Journal of the Korea Convergence Society, 6(3), 13-18. DOI : 10.15207/JKCS.2015.6.3.013
  6. J. U. Cho. (2015). Study on Convergence Technique through the Flow Analytical Study inside the Faucet for Bathroom. Journal of the Korea Convergence Society, 6(2), 37-42. DOI : 10.15207/JKCS.2015.6.2.037
  7. H. J. Kim & S. H. Kim. (2015). A Study on Air Flow Characteristics of Mid-mower for Tractor(I). Journal of the Korean Society of Manufacturing Process Engineers, 14(3), 27-35. DOI : 10.14775/ksmpe.2015.14.3.027
  8. C. S. Won, N. K. Hur & S. H. Kwon. (2013). Flow Analysis of Automotive Oil Pump of Gerotor Type. The KSFM Journal of Fluid Machinery, 6(4), 7-13. DOI : 10.5293/KFMA.2003.6.4.007
  9. C. H. Choi, J. G. Noh & J. H. Kim. (2010). Numerical Simulation of Cavitating Flow Around Turbopump Inducer. The KSFM Journal of Fluid Machinery, 13(3), 49-53. DOI : 10.5293/KFMA.2010.13.3.049
  10. S. H. Jo, J. I. Park & K. W. Nam. (2006). Numerical Simulation in the IC Engine Lubricating Gerotor Oil Pump. Transactions of the Korean Society of Mechanical Engineers B, 30(10), 1019-1025. DOI : 10.3795/KSME-B.2006.30.10.1019
  11. S. C. Yoo. (2018). Development of the Design and Manufacturing Technologies of the Experimental Four-Valve SI Engine for In-Cylinder Air Flow Study Using the Laser Based Flow Diagnostic Techniques. Journal of the Korean Society of Mechanical Technology, 20(3), 377-382. DOI : 10.17958/ksmt.20.3.201806.377
  12. C. R. Lee & B. H. Kim. (2018). Flow Analysis of Cylindrical Helical Water Turbine for Micro Hydro-power. Journal of the Korean Society of Mechanical Technology, 20(2), 187-193. DOI : 10.17958/ksmt.20.2.201804.187
  13. S. W. Jung, S. H. Park, M. J. Song & Y. Lee. (2018). Flow Characteristics of Double-Venturi Abrasive Blasting Nozzle. Journal of the Korean Society of Manufacturing Process Engineers, 17(2), 8-14. DOI : 10.14775/ksmpe.2018.17.2.008
  14. J. L. Cui, M. H. Chey & S. I. Kim. (2016). Seismic Performance of Urban Structures with Various Horizontal Irregularities using Equivalent Static Analysis. Journal of Convergence for Information Technology, 6(1), 25-32.
  15. W. B. Lee, S. H. Ryu, W. Y. Hao & B. P. Kyung. (2015). Dismantling Simulation of Nuclear Reactor Using Partial Mesh Cutting Method for 3D Model. Journal of Digital Convergence, 13(4), 303-310. https://doi.org/10.14400/JDC.2015.13.4.303