Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
권호 표지
DOI QR코드

DOI QR Code

Flow Characteristics of Two Types of Overhung Compressor Volute for Automobile Turbocharger

자동차용 터보차저의 오버헝 압축기 볼류트의 두 형태에 대한 유동장 특성

  • Received : 2013.05.20
  • Accepted : 2013.10.15
  • Published : 2014.01.01
Download PDF
⟨ Previous Next ⟩

Abstract

The flow characteristics of two types of overhung compressor volutes for automobile turbochargers were analyzed numerically using commercial software. For obtaining high performance from a volute, it is necessary that the volute have a high pressure recovery coefficient and a low loss coefficient. We investigated the flow characteristics of two types of overhung compressor volutes with a fixed diffuser inlet angle of $24^{\circ}$ and a mass flow rate of 0.055 kg/s. The first type is a volute with one-arc cross section (type 1) and the second type is with three-arc cross section (type 2). Our results showed that between the two types of volutes, type 2 had the higher pressure recovery coefficient and the lower loss coefficient along the entire angular position.

자동차용 터보차저 원심압축기의 오버헝 볼류트의 두 가지 타입에 대한 유동장 특성이 수치적으로 연구되었다. 볼류트의 성능을 높이기 위해서는 높은 압력회복계수와 낮은 손실계수를 갖도록 함이 필요하다. 본 연구에서는 디퓨저 입구각을 $24^{\circ}$, 질량유량을 0.055 kg/s 로 유지하고 두 가지 타입의 오버헝 볼류트에 대한 유동장 특성을 조사하였다. 하나는 1 개의 원호로 이루어진 볼류트 단면(타입 1)이며, 다른 하나는 3 개의 원호로 이루어진 볼류트 단면(타입 2)이다. 타입 2 볼류트가 타입 1 볼류트 보다 원주방향 전체를 통틀어 높은 압력회복계수와 낮은 손실계수를 보여주었다.

Keywords

References

  1. Japikse, D., 1996, Centrifugal Compressor Design and Performance, Concepts, Inc.
  2. Nicholas, C. B, 2005, Fundamental of Turbocharging, Concepts, Inc.
  3. Ayder, E., Van den Braembussche, R. and Brasz, J. J., 1993, "Experimental and Theoretical Analysis of the Flow in a Centrifugal Compressor Volute," ASME J. Turbomach., 115(6), pp. 582-589. https://doi.org/10.1115/1.2929293
  4. Kim, S., Park, J., Ahn, K. and Baek, J., 2010, "Improvement of the Performance of a Centrifugal Compressor by Modifying the Volute Inlet," Journal of Fluids Engineering, Vol. 224, No. 2, pp. 251-259.
  5. Cheng, X. and Michael, M., 2005, "Development and Design of a Centrifugal Compressor Volute," Int. J. of Rotating Machinery, Vol. 3, pp. 190-196.
  6. Kang, K. J., Shin, Y. H., Kim, K. H. and Lee, Y. P., 2013, " Flow Field in Volute for Various Operating Conditions of Centrifugal Compressor," Trans. Korean Soc. Mech. Eng. B, Vol. 37, No. 5, pp. 531-538. https://doi.org/10.3795/KSME-B.2013.37.5.531