2 edition of Laminar flow and heat transfer of Newtonian and viscoelastic liquids in helical coils. found in the catalog.
Laminar flow and heat transfer of Newtonian and viscoelastic liquids in helical coils.
Syed Mughis Asghar
Thesis (Ph.D.)-University of Birmingham, Department of Chemical Engineering.
Numerous experimental  and numerical [,] investigations on heat transfer and flow characteristics inside coiled tubes have already been reported. Furthermore, reviews on the flow and heat transfer characteristics and potential application of coiled tubes in process industries and heat transfer application can be found in [14,15]. Heat transfer with laminar flow of viscoelastic fluids in pipes Jiří Šesták 1 Applied Scientific Research vol pages – () Cite this article.
Flow drag and heat transfer reduction phenomena of non-ionic aqueous surfactant solutions flowing in helical and straight pipes have been experimentally investigated at surfactant solution concentration range of ppm and temperature range of ° C .The helically coiled pipes have curvature ratios range of – Answer: Heat Transfer rate is better in a Turbulent Flow. (If you want to understand why, then delve further into the answer) Reason: Laminar and Turbulent Flow regimes in cigarette smoke The flow regime near the cigarette butt is said to be Lamin.
This study addresses heat transfer performance of various configurations of coiled non-circular tubes, e.g., in-plane spiral ducts, helical spiral ducts, and conical spiral ducts. The laminar flow of a Newtonian fluid in helical coils made of square cross section tubes is simulated using the computational fluid dynamic approach. The effects of tube Reynolds number, fluid Prandtl number, coil. Pitch variations began with and m for the first and second model, respectively. In this study, the velocity was analyzed, and the effects of this reduction on coil friction factor were also examined using laminar flow. The results were validated by Ito's equation for the laminar flow.
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This study aimed to carry out experimental work to obtain, for Newtonian and non-Newtonian fluids, heat transfer coefficients, at constant wall temperature as boundary condition, in fully developed laminar flow inside a helical coil.
The Newtonian fluids studied were aqueous solutions of glycerol, 25%, 36%, 43%, 59% and 78% (w/w) and the non Cited by: Rahul Harishchandra Patil, Experimental studies on heat transfer to Newtonian fluids through spiral coils, Experimental Thermal and Fluid Science, /rmflusci, 84, ( Cited by: T.
Pimenta, J.B.L.M. Campos, Heat transfer coefficients from Newtonian and non-Newtonian fluids in laminar regime in a helical coil, International Journal of Heat and Mass Transfer, 58 (),p–Author: Vitor da Silva Rosa, Daniel Lopes Muiños Torneiros, Henrique Weiss de Albuquerque Maranhão, Marlene.
They correlated their heat transfer data for viscoelastic polyacrylamide solutions in different coils by using the modified Graetz Leveque equation.
The present paper presents a complete numerical solution for fully developed laminar flow and heat transfer for power law fluids in coiled tubes with a uniform wall by: In the present work, heat transfer and fluid flow characteristics for both Newtonian and non-Newtonian fluids in tube-in-tube helical coil (TTHC) heat exchangers have been investigated numerically.
Total experiments were conducted with experimental conditions specified in Table 2, Water and SN70 oil was used for fluid flow experiment in five spiral coils. seven spiral coils were used in heat transfer experiment for Newtonian fluids SN70, SN and SN with laminar flow and isothermal boundary condition.
12 A. Sobti et al., Flow of Viscoelastic Fluid through a Helical Coil, Chem. Q (1) 11–20 (), Naphon and Wongwises 11 and Zhou and Shah18 have presented critical reviews on flow and heat transfer characteristics of Newtonian and non-Newtonian fluids flowing through helical coils.
This study aimed to carry out experimental work to determine, for Newtonian and non-Newtonian fluids, the friction factor (f c) with simultaneous heat transfer, at constant wall temperature as boundary condition, in fully developed laminar flow inside a vertical helical Newtonian fluids studied were aqueous solutions of glycerol, 25%, 36%, 43%, 59% and 78% (w/w).
Irvine, T. and Cheng J. () Conjugated laminar heat transfer for Newtonian and power law fluids in triangular ducts, J. Energy Heat Mass Trans., 15, – Kokorev, L. et al. () Effect of secondary flows on the velocity distribution and hydraulic drag in turbulent liquid flows in non-circular channels, Heat Trans.
Sov. Pimenta, T. and Campos, J. M., “ Heat transfer coefficients from Newtonian and non-Newtonian fluids flowing in laminar regime in a helical coil,” Int. Heat Mass Transfer.
Newtonian counterpart. Heat transfer with non-Newtonian fluids is a vast topic given the wide range of fluids and flows of interest, and it cannot be covered in its vastness in this chapter.
Internal flows are quite relevant in the scope of non-Newtonian fluid flows and heat transfer, with the pipe flow. The heating and cooling of non-Newtonian liquids in tanks with mechanical impellers are operations commonly employed as chemical reactors, heat exchangers, distillers, extractors, thinners and decanters.
In particular, the design of heat exchangers (jackets, helical coils, spiral coils and vertical tubular baffles) in tanks requires the prior knowledge of the rheology of the liquid for the. The heat transfer in the agitation of Newtonian liquids and non-Newtonian liquids is intimately linked to hydrodynamics, because the flow occurring in the fluid and in.
PDF | The study aims at quantifying the effect of fluid elasticity on frictional pressure drop for the flow of viscoelastic fluid through a helical | Find, read and cite all the research you. Seyed Shahab Mozafarie, Kourosh Javaherdeh, Numerical design and heat transfer analysis of a non-Newtonian fluid flow for annulus with helical fins, Engineering Science and Technology, an International Journal, /, ().
Laminar Flow. In fluid dynamics, laminar flow is characterized by smooth or in regular paths of particles of the fluid, in contrast to turbulent flow, that is characterized by the irregular movement of particles of the fluid.
The fluid flows in parallel layers (with minimal lateral mixing), with no disruption between the layers. Therefore the laminar flow is also referred to as streamline or.
A theoretical analysis for the laminar flow past arbitrary external surfaces of non‐Newtonian fluids of the power‐law model is presented. The main problem which is considered is how to predict the drag and the rate of heat transfer from an isothermal surface to the fluid.
Non-Newtonian Flow and Heat Transfer, Wiley, New York. Chhabra, R. P., and. Richardson, Viscoelastic Fluids: A New Challenge in Heat Transfer. Heat Transfer (May, ) Experimental Investigation of the Laminar Flow Heat Transfer Enhancement in a Small-Scale Square Duct With Aqueous Carbopol Solutions.
Heat Transfer. A double-pipe helical heat exchanger was numerically studied to determine the effects of thermally dependent viscosity and non-Newtonian flows on heat transfer and pressure drop for laminar flow.
Laminar flow, type of fluid (gas or liquid) flow in which the fluid travels smoothly or in regular paths, in contrast to turbulent flow, in which the fluid undergoes irregular fluctuations and laminar flow, sometimes called streamline flow, the velocity, pressure, and other flow properties at each point in the fluid remain constant.
Laminar flow over a horizontal surface may be. Laminar Flow in Helical Coils: A Parametric Study. Industrial & Engineering Chemistry Research50 (2), DOI: /iez. Monisha Mridha Mandal and K. D. P. Nigam. Experimental Study on Pressure Drop and Heat Transfer of Turbulent Flow in Tube in Tube Helical Heat Exchanger.It has mainly been used in the field of mixing for the correlation of results for non-Newtonian fluids relating to power requirement, heat transfer, and blend time.
with coils: laminar flow.This paper presents results of an experimental study on the heat transfer enhancement in laminar flow of non-Newtonian fluids, aqueous Carbopol solutions through a small-scale square duct.
The square duct is a top-wall heated configuration with a hydraulic diameter of cm.