عنوان
پدید آورنده
موضوع
رده
کتابخانه
محل استقرار
شماره کتابشناسی ملی
شماره
TLpq304260423
زبان اثر
زبان متن نوشتاري يا گفتاري و مانند آن
انگلیسی
عنوان و نام پديدآور
عنوان اصلي
Statistical analysis of hot-wire calibration coefficients for normal and inclined wires in heated turbulent flows
نام عام مواد
[Thesis]
نام نخستين پديدآور
R. F. Arab
نام ساير پديدآوران
J. F. Keffer
وضعیت نشر و پخش و غیره
نام ناشر، پخش کننده و غيره
University of Toronto (Canada)
تاریخ نشرو بخش و غیره
1995
مشخصات ظاهری
نام خاص و کميت اثر
117
یادداشتهای مربوط به پایان نامه ها
جزئيات پايان نامه و نوع درجه آن
M.A.Sc.
کسي که مدرک را اعطا کرده
University of Toronto (Canada)
امتياز متن
1995
یادداشتهای مربوط به خلاصه یا چکیده
متن يادداشت
An experimental study of hot-wire calibration equations having the form Nu = usdA + BusdRe, where Nu and Re are the Nusselt number and Reynolds number respectively, was conducted in a variable-speed air flow to examine the systematic variation of calibration coefficients, A and B, with different values of the flow temperature, usdT\sb{g}usd, and the hot-wire temperature, usdT\sb{w}usd. The former temperature was varied from 3C to 30C, the overheat ratio, which depends upon usdT\sb{w}/T\sb{g}usd, was varied from 1.5 to 1.95, and the flow Reynolds number based on hot-wire diameter and flow velocity was varied from 0.6 to 5. The method of least squares, in conjunction with statistical significance tests, was used to estimate A and B from the hot-wire calibration data at different flow and wire temperatures. Subsequently, the variation of A and B were determined as functions of usdT\sb{g},\ T\sb{w}usd and the "film temperature", usdT\sb{f}\ =\ (T\sb{g}\ +\ T\sb{w})/2usd. The results revealed the following: (a) The exponent "n" in hot-wire equations can be considered to be constant. (b) The coefficient "A" appears to depend upon usdT\sb{g}usd; whereas, the coefficient "B" appears to be a constant (i.e., independent of usdT\sb{g}usd). (c) For a given heated turbulent flow, with usdT\sb{w}usd kept constant, the assumption that usdT\sb{g}usd does not vary causes unacceptable errors in the estimated velocity field of the flow; however, the velocity-field errors resulting from treating the relevant fluid properties (viz., thermal conductivity and kinematic viscosity) and the calibration coefficients "A" and "B" as constants are small, although not insignificant, in comparison with the errors caused by ignoring the variations in usdT\sb{g}usd.
موضوع (اسم عام یاعبارت اسمی عام)
موضوع مستند نشده
Applied sciences
موضوع مستند نشده
Mechanical engineering
نام شخص به منزله سر شناسه - (مسئولیت معنوی درجه اول )
مستند نام اشخاص تاييد نشده
J. F. Keffer
مستند نام اشخاص تاييد نشده
R. F. Arab
دسترسی و محل الکترونیکی
نام الکترونيکي
مطالعه متن کتاب وضعیت انتشار
فرمت انتشار
p
اطلاعات رکورد کتابشناسی
نوع ماده
[Thesis]
کد کاربرگه
276903
اطلاعات دسترسی رکورد
سطح دسترسي
a
تكميل شده
Y
