منابع مشابه
Entropy Generation in Laminar Fluid Flow through a Circular Pipe
A numerical solution to the entropy generation in a circular pipe is made. Radial and axial variations are considered. Navier-Stokes equations in cylindrical coordinates are used to solve the velocity and temperature fields. Uniform wall heat flux is considered as the thermal boundary condition. The distribution of the entropy generation rate is investigated throughout the volume of the fluid a...
متن کاملStability of steady flow through an axially corrugated pipe
The linear stability of steady flow in pipes with circular cross-section and sinusoidal axial variation in diameter is studied by finding global eigenmodes with axial wavelength commensurate with that of the wall corrugation, chosen to be equal to one pipe mean radius. The maximum peak-to-peak height of corrugation considered is approximately 8% of the mean diameter. At low corrugation amplitud...
متن کاملLaminar Flow Heat Transfer of a Pseudoplastic Fluid through a Double Pipe Heat Exchanger
An experimental study was carried out to obtain the mean convective heat transfer coefficient of aqueous carboximethyl cellulose (CMC) solutions in double-pipe heat <span style="font-size: 10pt; color:...
متن کاملDistinct large-scale turbulent-laminar states in transitional pipe flow.
When fluid flows through a channel, pipe, or duct, there are two basic forms of motion: smooth laminar motion and complex turbulent motion. The discontinuous transition between these states is a fundamental problem that has been studied for more than 100 yr. What has received far less attention is the large-scale nature of the turbulent flows near transition once they are established. We have c...
متن کاملMeasurements of Terahertz Generation in a Metallic, Corrugated Beam Pipe
A method for producing narrow-band THz radiation proposes passing an ultra-relativistic beam through a metallic pipe with small periodic corrugations. We present results of a measurement of such an arrangement at Brookhaven’s Accelerator Test Facility (ATF). Our pipe was copper and was 5 cm long; the aperture was cylindrically symmetric, with a 1 mm (radius) bore and a corrugation depth (peak-t...
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ژورنال
عنوان ژورنال: Bulletin of JSME
سال: 1979
ISSN: 0021-3764,1881-1426
DOI: 10.1299/jsme1958.22.1198