DOI QR코드

DOI QR Code

Development of the Driving Pump for the Super-cavitation & High-speed Cavitation Tunnel

초공동 고속 캐비테이션 터널 구동펌프 개발

  • Ahn, Jong-Woo (Korea Research Institute of Ships & Ocean Engineering (KRISO)) ;
  • Kim, Gun-Do (Korea Research Institute of Ships & Ocean Engineering (KRISO)) ;
  • Paik, Bu-Geun (Korea Research Institute of Ships & Ocean Engineering (KRISO)) ;
  • Kim, Kyoung-Youl (Korea Research Institute of Ships & Ocean Engineering (KRISO))
  • 안종우 (한국해양과학기술원 부설 선박해양플랜트연구소) ;
  • 김건도 (한국해양과학기술원 부설 선박해양플랜트연구소) ;
  • 백부근 (한국해양과학기술원 부설 선박해양플랜트연구소) ;
  • 김경열 (한국해양과학기술원 부설 선박해양플랜트연구소)
  • Received : 2017.08.19
  • Accepted : 2018.02.08
  • Published : 2018.04.20

Abstract

In order to develop the driving pump for High-speed Cavitation Tunnel(HCT) which can experiment the super-cavitating submerged body, KRISO decided on the pump specification, designed the mixed-flow pump on the basis of the existing pump data and predicted the performance of the design pump using commercial CFD code (CFX-10). After the manufacture and installation of the driving pump, KRISO conducted the trial-test for HCT, analyzed the pump performance and compared trial-test results to those of design stage. The trial-test items for the HCT driving pump are measurements of output current/voltage at the inverter of the driving pump and the flow velocity in the HCT test section. The trial-test results showed the decrease in the flow rate of about 4.6% and the increase in pump head of about 8%, compared with those of the pump prediction. After the trial-test, the performance of the driving pump is predicted using CFX-10 with measured flowrates and pump rotational velocities. Though there is some difference between trial-test and prediction results due to inadequate motor data, it is thought that the tendency is reasonable. It is found that CFX-10 is useful to predict a mixed-flow pump.

Keywords

References

  1. Ahn, J.W., Kim, G.D., Kim, K.S., Lee, J.T. & Seol, H. S., 2008. Development of the driving pump for the low noise large cavitation tunnel. Journal of Society of Naval Architects of Korea, 45(4), pp.370-378. https://doi.org/10.3744/SNAK.2008.45.4.370
  2. Ahn, J.W., Kim, G.D., Kim, K.S. & Park, Y.H., 2010. Development of the weight reduction pump for waterjet propulsion. Journal of Society of Naval Architects of Korea, 47(1), pp.30-37. https://doi.org/10.3744/SNAK.2010.47.1.030
  3. Ahn, J.W., Kim, G.D., Kim, K.S. & Park, Y.H., 2015. Performance trial-test of the full-scale driving pump for the large cavitation tunnel(LCT). Journal of Society of Naval Architects of Korea, 52(6), pp.428-434. https://doi.org/10.3744/SNAK.2015.52.6.428
  4. Escobar, E., Balas, G. & Arndt, R.E.A., 2014. Planing avoidance control for supercavitating vehicles. American Control Conference, Portland, OR, 4-6 June 2014, USA.
  5. Ha, J.H. & Son, B.J., 1996. Fluid machinery. Bo Moon Dang: Korea, pp.65.
  6. Kawakami, E. & Arndt, R.E.A., 2011. Investigation of the behavior of ventilated supercavities. Journal of Fluids Engineering, 133(9), 091305. https://doi.org/10.1115/1.4004911
  7. Paik, B.G., Park, I.R., Kim, K.S., Lee, K.C., Kim, M.J. & Kim. K.Y., 2017. Design of a bubble collecting section in a high speed water tunnel for ventilated supercavitation experiments. Journal of Mechanical Science and Technology, 31(9), pp.4227-4235. https://doi.org/10.1007/s12206-017-0821-x
  8. Paik, B.G., Park, I.R., Kim, K.S., Lee, K.C., Kim, M.J. & Kim. K.Y., 2016. Study on bubble collecting section of cavitation tunnel for ventilated supercavitation experiments. Journal of Society of Naval Architects of Korea, 53(4), pp.300-315. https://doi.org/10.3744/SNAK.2016.53.4.300