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Friday, May 1, 2020 | History

2 edition of Condensation on static and rotating surfaces. found in the catalog.

Condensation on static and rotating surfaces.

Ramasurbramanian Chandran

Condensation on static and rotating surfaces.

by Ramasurbramanian Chandran

  • 224 Want to read
  • 4 Currently reading

Published by University of Salford in Salford .
Written in English


Edition Notes

PhD thesis, Chemical Engineering.

SeriesND3283/73
ID Numbers
Open LibraryOL19686895M

With rotation the distribution of mass matters. Actual result depends on the distance from the axis of rotation. Hence, only the axis of rotation remains fixed in reference to rotation. We find that angular motions may be quantified by defining a vector along the axis of rotation. We can employ the right hand rule to find the vector directionFile Size: KB.   In dropwise condensation the condensate liquid collects in the form of countless droplets of varying diameters on the condensing surface, instead of .

  Ansys Tutorial static structure analysis F1 wheel jose luis Martin. 3D Bridge Truss with Surface Body Platform - Duration Simulation of rotating a train wheel on a railway (trial. @article{osti_, title = {Numerical and Experimental Investigations of a Rotating Heat Pipe}, author = {Jankowski, Todd A.}, abstractNote = {Rotating and revolving heat pipes have been used in a variety of applications including heat pipe heat exchangers, cooling of rotating electrical machines, and heat removal in high speed cutting by: 7.

Chapter 2: Pressure and Fluid Statics Pressure For a static fluid, the only stress is the normal stress since by definition a fluid subjected to a shear stress must deform and undergo motion. Normal stresses are referred to as pressure p. For the general case, the stress on a fluid element or at a point is a tensor For a static fluid,File Size: 1MB. To control the surface condensation with above-mentioned strategies, the surface condensation risk needs to be predicted in advance in relation to heat and moisture transfer in building construction. Despite their usefulness, these models are not directly applicable to controlling the surface condensation for two reasons.


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Condensation on static and rotating surfaces by Ramasurbramanian Chandran Download PDF EPUB FB2

Condensation on static and rotating surfaces. Author: Chandran, R. ISNI: Awarding Body: University of Salford Current Institution: University of Salford Date of Award: Availability of Full Text: Full text unavailable from EThOS.

If size of K is too large to fit into the CPU memory of the computer at hand, it is necessary to reduce the size of the matrix to solve the problem.

Static condensation is a process of eliminating or condensing some unknown DOF (known as secondary or slave DOF) and re-cast the original Eq. set () in terms of fewer unknowns (termed as primary unknowns or master DOF).

SURFACE SCIENCE, WETTING, CONDENSATION, ENGINEERED SURFACES Correspondence and requests for materials: [email protected] and [email protected] Dropwise Condensation of Low Surface Tension Fluids on Omniphobic Surfaces Konrad Rykaczewski,1*,x Adam T.

Paxson,2,x Matthew Staymates,3,xx Marlon Size: 7MB. The Condensation Process. Condensation occurs when warmer moist air comes in contact with cold surfaces such as framing members, windows and other accessories, or the colder region within the insulation envelope (if moisture has penetrated the vapor retarder).

Warm air, having the ability to contain more moisture than cold air, loses that ability when it comes in contact with cool or cold surfaces. The present paper considers the condensation or spraying on a disk subjected to both centrifugal and gravitational forces, i.e.

the flow of a film on an inclined rotating disk. The problem is important for both terrestrial and space environments where the axis of rotation is not parallel to the gravitational by: Condensation on outdoor surfaces occurs if the outdoor Condensation on static and rotating surfaces.

book temperature tos equals or falls below the dew point temperature tDP. tDP depends on the external air temperature to and relative humidity rHo of the external air.

For the special case of rHo = % interesting especially in the following calculations, it follows for condensation on File Size: 3MB. condensation is really an indication of excess humidity in the home. Exterior condensation, on the other hand, is a form of dew — the glass simply provides a surface on which the moisture can condense.

The important thing to realize is that if excessive humidity is causing window condensation, it may also be causing problems elsewhere in your File Size: KB. Mechanistic Modelling of Water Vapour Condensation in Presence of Noncondensable Gases Doctoral Thesis by Krzysztof Karkoszka School of Engineering Sciences Department of Physics Div.

of Nuclear Reactor Technology Stockholm, LECTURE 9 Solution of finite element equations in static analysis Basic Gauss elimination Static condensation Substructuring Multi-levelsubstructuring Frontalsolution t l> t T-factorization (column reduction scheme) as used in SAP and ADINA Cholesky factorization Out-of-coresolution of large systems Demonstration of basic techniques using.

this book may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, or otherwise, without prior written permission of the authors.

This book is a pre-release version of a book in progress for Oxford University Press. The enhancement in the rate of the heat transfer resulting from rotating smooth and rough vertical cylinders, of and μ m average roughness, respectively, are experimentally studied.

Experiments were carried out for cooling fluid Reynolds numbers from to with varying the rotational speed up to rpm ⁠.Experimental runs at the stationary case showed an acceptable Cited by: 3. A much less common form of condensation structure of the building itself.

This is known as interstitial condensation and can easily be mistaken for rising damp or penetrating damp. Overcoming Condensation It has been shown that condensation results from moist air coming into contact with cold surfaces and that the likelihood of.

Condensation on a surface is determined by competition between the forces caused by the electric field and the attraction force from the surface.

An electric field can rotate water molecules upwards with the torsion force, as described by: 2. Condensation of liquid droplets on solid surfaces happens widely in nature and industrial processes.

This phase-change phenomenon has great effect on the performance of some microfluidic devices. After hydrophobic modification, the wettability and the heat transfer characteristics of dropwise condensation on the micro-grooved surfaces were investigated experimentally, and the coalescence and sweeping processes of droplets on micro-grooved surfaces were dynamically by: The dew point defines when moisture will begin to condense on building surfaces or in building materials by relating the condensation point to indoor temperature and relative humidity.

Results. We apply MD simulation to condensation of Lennard-Jones (L-J) vapor on cooled solid surfaces. The saturated vapor and solid surface are in thermodynamic equilibrium at before the solid surface is suddenly cooled to (ΔT = T v − T s) at t = 0 τ, τ being the time scale. The fluid-solid interaction is also described by the L-J potential function with a fluid-solid bonding strength Cited by: The condensation technique for the deletion of unwanted degrees of freedom was first proposed by Guyan () and Irons () in Because the dynamic effect is ignored in the condensation, this method is usually referred to as static condensation.

Since the late s, this technique has been widely used in many static and dynamic problems. In the case of charged surfaces, an additional static electric field leads to a third-order contribution χ (3) due to the polarization and polar ordering of water molecules near and at the charged surface.

The Debye length κ –1 and the surface potential ϕ 0 are decisive factors for Cited by: 4. Hi All, I am simulation biomass drying using thermal phase change evaporation-condensation model (eulerian multiphase). initial conditions: Biomass initial volume The student community is a public forum for authorized ANSYS Academic product users.

The application of the static condensation method is discussed in general. The technique is presented as an extension of the Gauss elimination algorithm. An efficient FORTRAN subroutine is given which simultaneously reduces both the stiffness matrix and the stress‐displacement transformation by: Chapter 12 Liquids: Condensation, Evaporation, and Dynamic Equilibrium Changing from Gas to Liquid and from Liquid to Gas—An Introduction to Dynamic Equilibrium Our discussion of liquids focuses on two opposing processes: condensation, in which liquids are formed from gases, and evaporation, in which liquids return to Size: 2MB.The solution for condensation on a rotating cone has been carried out by Sparrow and Hartnett [19].

to and Zuber's value of TT /24 ), thus giving a range of heat rates for the boiling limit. Since the boiler surface of the rotating heat pipe may be approximated by a flat plate, for large radii of curvature, Zuber's predicted curve.