A research of heat transfer enhancement of rectangular channel with dimples
نویسندگان
چکیده
منابع مشابه
An Experimental Study of Heat Transfer Enhancement in the Circular Channel with Almond Shape Dimples
Heat transfer coefficients were measured in a circular tube with dimpled surface. The almond type dimples were fabricated, the tube diameter (D) 19mm and dimple depth 3 mm ratio was kept constant, while holding diameter 10mm of dimple is required length 21.5mm because of the elongated shape. The Reynolds number based on the channel hydraulic diameter was varied from 25000to 95000. An experiment...
متن کاملInvestigation of Laminar Pulsating Nanofluid Flow and Heat Transfer in a Rectangular Channel
In this study, two-dimensional pulsating unsteady flow of nanofluid through a rectangular channel with isothermal walls is investigated numerically. The set of resultant algebraic equations is solved simultaneously using SIMPLE algorithm to obtain the velocity and pressure distribution within the channel. The effects of several parameters, such as volume fraction of different nanoparticles, Rey...
متن کاملSingle ! phase heat transfer enhancement in a curved \ rectangular channel subjected to concave heating
Experiments were performed to ascertain the single!phase heat transfer enhancement provided by streamwise curva! ture[ Curved and straight rectangular ~ow channels were fabricated with identical 4[9×1[4 mm cross!sections and 090[5 mm heated lengths in which heat was applied to a 21[2 mm radius concave wall in the curved channel and a side wall in the straight[ Reynolds number ranged from 8999 t...
متن کاملNanofluids for Heat Transfer Enhancement – A Review
A nanofluid is a dilute liquid suspension of particles with at least one critical dimension smaller than ~100 nm. Research works so far suggest that nanofluids offer excellent heat transfer enhancement over conventional base fluids. The enhancement depends on several factors such as particle shape, particle size distribution, volume fraction of nanoparticles, temperature, pH, and thermal conduc...
متن کاملLocal Heat Transfer Coefficients in a Rectangular Duct with Plate Blockages of Variable Stream Wise Spacing
An experimental investigation is conducted to determine the effect of repeated-plate blockages of variable streamwise spacing on heat transfer characteristics of turbulent flow in rectangular ducts. The plates are attached to the upper and lower walls in a staggered arrangement. The experiments are carried out by mass transfer and the analogy between heat and mass transfer provides the necessar...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: MATEC Web of Conferences
سال: 2017
ISSN: 2261-236X
DOI: 10.1051/matecconf/201710004001