2 edition of Turbulent flow in spirally fluted tubes found in the catalog.
Turbulent flow in spirally fluted tubes
|Statement||Lu Cheng ; supervised by B.E. Launder.|
|Contributions||Launder, B. E., Mechanical Engineering (T.F.M.).|
Turbulent Flow EXTENDED SURFACE INSERT TANGENTIAL INJECTION DEVICES CONCLUSIONS REFERENCES NOMENCLATURE CHAPTER 8: INTERNALLY FINNED TUBES AND ANNULI INTRODUCTION INTERNALLY FINNED TUBES Laminar Flow Turbulent Flow PEC Example 1 SPIRALLY FLUTED TUBES The General Atomics Spirally Fluted Tube Spirally Indented Tube. The thermal/hydraulic performance of Turbotec spirally fluted tubes was evaluated. The emphasis is on individual heat transfer coefficients for the inside and outside surfaces so that the designer can calculate the overall heat transfer coefficient for any type of heat exchanger. The data for Turbotec tubes are presented in terms of an envelope diameter so that direct comparisons can be Cited by: 3.
Technical Report: Spirally-fluted tubes and enhanced tubes in confined crossflow. Part 1. Flow inside fluted tubes. Final report, August September Moody Diagram: Developed to provide the friction factor for turbulent flow for various values of Relative roughness and Reynold’s number! From experimentation, in turbulent flow, the friction factor (or head loss) depends upon velocity of fluid V, dia. of pipe D, density of fluid ρ, viscosity of fluid µ, wall roughness height ε.
tested the fluid flow and heat transfer characteristics of the spirally fluted tubes. The imparting of a tangential flow was investigated by Gau and Chen[ 5]. Relatively speaking the study on the twisted duct is quite limited. The purpose of this paper is to investigate the turbulent heat transfer and fluid flow in twisted uniform cross section Cited by: 1. Heat transfer enhancement and pressure drop penalty in annuli with spirally fluted inner tubes were evaluated for the laminar, transition, and turbulent flow regimes for the Prandtl number range
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Internally finned tubes Spirally fluted tubes Advanced internal fin geometries Laminar flow Turbulent flow Annuli This is a preview of subscription content, log in to check access. ReferencesAuthor: Sujoy Kumar Saha, Hrishiraj Ranjan, Madhu Turbulent flow in spirally fluted tubes book Emani, Anand Kumar Bharti.
It also presents a detailed exposition of the various dimensions of turbulent flow. The book would be extremely useful for practicing engineers, particularly in the field of hydraulic analysis and design, building dynamics and environmental engineering.
CONTENTS: Laminar Flow-Transition from Laminar to Turbulent Flow-Nature of Turbulence. The Prediction of Heat-Transfer Performance in Spirally Fluted Tubes: The Turbulent Flow Regime Pages The paper reports the results of a numerical study of flow through spirally fluted tubes in the turbulent regime.
On the Structure of Turbulent Flow in Spirally Fluted Tubes. Research output: Chapter in Book/Report/Conference proceeding › Conference contributionCited by: 6. A numerical investigation of periodically fully developed, steady, single-phase, turbulent flow and heat transfer in two spirally finned tubes has been first performed.
Fluid flow in annuli spirally enhanced inner tubes was investigated for the laminar, transitional, and turbulent flow regimes. Three different types of spirally enhanced tubes were investigated - fluted, indented, and ribbed. Flow patterns and transitions between flow regimes were qualitatively investigated through visualisation tests.
This book allows readers to tackle the challenges of turbulent flow problems with confidence. It covers the fundamentals of turbulence, various modeling approaches, and experimental studies.
The fundamentals section includes isotropic turbulence and anistropic turbulence, turbulent flow dynamics, free shear layers, turbulent boundary layers and. An experimental investigation has been carried out using two General Atomic spirally fluted tubes. Turbulent tubeside pressure drop and heat transfer data were obtained for tubes with flute angles of 30° and 60° using the HTRI Single-Tube Single-Phase Unit.
Water and air were used as test fluids and both heating and cooling results were obtained. Spirally fluted tubing: Prediction and measurement Article (PDF Available) in La Houille Blanche 6(1) February with 19 Reads How we measure 'reads'.
Turbulent Flow Discover Prime Book Box for Kids Story time just got better with Prime Book Box, a subscription that delivers editorially hand-picked children’s books every 1, 2, or 3 Format: Paperback.
coefficient of the carbon steel spirally fluted tube is around 10−17 % higher than the carbon steel smooth tube. Dong et al. () presented the experimental studied the turbulent flow in a spirally corrugated tube on pressure drop and heat transfer.
The roughness height ratio, e/D =,and and spiral pitch ratio p/Cited by: 2. swirl flow in rough tubes, the improvement was as much as percent. Spirally Indented or Fluted Tubes 26 Summary of Review 27 6. CONCLUSIONS 28 6. Heat-Transfer Data for Smooth and RID Tubes in Turbulent Range 7.
Heat-Transfer Data for Smooth and RID Tubes in Laminar and Transitional Range 8. Constant Pumping Power Comparison. DATA BOOK III. Enhanced heat transfer design methods for tubular.
heat exchangers Laminar Heat Transfer in Spirally Fluted Tubes. 96 CHAPTER 5 – ENHANCED SINGLE-PHASE TURBULENT TUBE-SIDE FLOWS AND HEAT finned tubes and with twisted tape inserts.
It covers turbulent flow and turbulent flow augmentation. Introduction File Size: 1MB. turbulent flow in order to better understand the development of the swirl in the bulk flow. It was found that the fluted inner tubes are the most efficient in promoting the secondary flow and hence in enhancing the convective heat transfer.
The same Authors [9,10] suggested also correlating equations for the friction factor and the Nusselt number for the laminar, transitional and turbulent flow in spirally fluted. For the heat transfer of molten salt flow in spirally grooved tube, the turbulent flow can be stronger than that in smooth tube for the spirally groove, and the critical Reynolds number from the transition flow to turbulent flow decreased to about Cited by: 2-water nanofluids in the spirally fluted tube and the smooth tube for laminar flow and turbulent flow are compared.
It is found that there are a larger increase in heat transfer and a smaller increase in frictional resistance coefficients for turbulent flow than that for laminar flow of TiO 2-water nanofluids in the spirally fluted by: 9. The flow and heat transfer characteristics of TiO 2 -water nanofluids with different nanoparticle mass fractions in a spirally fluted tube and a smooth tube are experimentally investigated at different Reynolds numbers.
The effects of pH values and doses of dispersant agent on the stability of TiO 2 -water nanofluids are by: 9. This paper is the first of two papers that present the results of a comprehensive study of heat transfer and pressure drop in annuli with spirally fluted inner tubes for the laminar, transition, and turbulent flow Cited by:.
Turbulent forced convection and heat transfer structure in the spirally semicircle-grooved tube heat exchanger are numerically examined.
The computational problem is solved by finite volume method (FVM) with the SIMPLE algorithm. The influences of groove depth and helical pitch on heat transfer, pressure loss, and thermal performance are investigated for turbulent regime, Re = Cited by: 2.Experimental heat transfer data for single-phase water flow in the annuli with corrugated inner tubes are presented.
In the annuli with parallel flow, ten different annular arrangements are considered. For water (low rate in l,Cited by: The flow and heat transfer characteristics of TiO 2-water nanofluids with different nanoparticle mass fractions in a spirally fluted tube and a smooth tube are experimentally investigated at different Reynolds effects of pH values and doses of dispersant agent on the stability of TiO 2-water nanofluids are effects of nanoparticle mass fractions and Reynolds Cited by: 9.