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• W2085287655 abstract "International Journal of Computational Engineering ScienceVol. 04, No. 02, pp. 425-430 (2003) Design, Modelling and SimulationNo AccessNEAR-WALL HOT-WIRE CORRECTION BASED ON Y+ AND H0W. Z. LI, B. C. KHOO and D. XUW. Z. LIDepartment of Mechanical Engineering, National University of Singapore, Singapore Search for more papers by this author , B. C. KHOODepartment of Mechanical Engineering, National University of Singapore, Singapore Search for more papers by this author and D. XUInstitute of High Performance Computing, Singapore Science Park II, Singapore Search for more papers by this author https://doi.org/10.1142/S1465876303001435Cited by:0 PreviousNext AboutSectionsPDF/EPUB ToolsAdd to favoritesDownload CitationsTrack CitationsRecommend to Library ShareShare onFacebookTwitterLinked InRedditEmail AbstractHot-wire anemometry is a well developed measuring technique widely used in experimental fluid mechanics to obtain local, time-resolved information on fluid velocity fields. Usually, HWA probe is calibrated in a free stream. However, with the proximity of hot wire to the wall in near-wall measurement, the additional heat lost experienced by the wire due to the presence of the wall has resulted in the necessity of having a wall correction factor to obtain the true velocity. In this study, a numerical study is carried out to obtain the correction curve for the near-wall measurements for the two extreme cases of isothermal and adiabatic wall conditions. Unlike previous studies where the correction curve is primarily based on the one dimensionless parameter , it is found that another dimensionless parameter h0(≡h/D) accounting for the effect of the hot-wire diameter (D) is also necessary to describe the overall near-wall correction curve. Velocity correction factors for both adiabatic wall and isothermal wall are obtained based on Y+ and h0 in the range of 150≥h0≥5.Keywords:Hot-wire correction factornear-wall measurement References J. A. B. Wills, J. Fluid Mech. 12, 388 (1962). Crossref, Google ScholarS. Oka and Z. Kostic, DISA Inf. 13, 29 (1972). Google ScholarU. K. Singh and R. Shaw, DISA Conf. Fluid Dynamic Measurements (Leicester Univ. Press, 1972) p. 35. Google ScholarK. S. Hebbar, DISA Information 25, 15 (1980). Google ScholarL. V. Krishnamoorthyet al., Exp. Fluids 3, 121 (1985). Crossref, Google ScholarY. T. Chew, B. C. Khoo and G. L. Li, Meas. Sci. Technol. 9, 67 (1998). Crossref, Google ScholarJ. C. Bhatia, F. Durst and J. Jovanovic, J. Fluid Mech. 122, 411 (1982). Crossref, Google ScholarY. T. Chew, S. X. Shi and B. C. Khoo, Int. J. Heat Fluid Flow 16, 471 (1995). Crossref, Google ScholarC. F. Lange, F. Durst and M. Breuer, Int. J. Heat Fluid Flow 20, 34 (1999). Crossref, Google Scholar F. M. White , Viscous Fluid Flow ( McGraw-Hill , New York , 1991 ) . Google Scholar W. Z. Li, B. C. Khoo and D. Xu, Computational domain size in numerical simulation of heat transfer from a near-wall hot-wire, Proceedings of APCOM '99, Asia-Pacific Congress on Computational Mechanics, Singapore (1999),631-636 . Google Scholar W. Z. Li, B. C. Khoo and D. Xu, Correction of hot-wire measurements in the near non-conducting wall region, Proceedings of the ASME, Fluids Engineering Division, Florida (2000), 279-284 . Google Scholar FiguresReferencesRelatedDetails Recommended Vol. 04, No. 02 Metrics History KeywordsHot-wire correction factornear-wall measurementPDF download" @default.
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• W2085287655 title "NEAR-WALL HOT-WIRE CORRECTION BASED ON Y+ AND H0" @default.
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