Author: Dean Byard TuftPublisher:
ISBN:
Category :
Languages : en
Pages : 242
Book Description
An Experimental and Numerical Study of Steady Forced-convection Heat Transfer in a Spherical Annulus
Author: Dean Byard TuftA Numerical Study of Steady Turbulent Forced Convection Heat Transfer in a Spherical Annulus Heat Exchanger
Author: Werner SteinNumerical Analysis of Laminar Forced Convection in a Spherical Annulus
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Calculations of steady laminar incompressible fluid-flow and heat transfer in a spherical annulus are presented. Steady pressures, temperatures, velocities, and heat transfer coefficients are calculated for an insulated outer sphere and a 0°C isothermal inner sphere with 50°C heated water flowing in the annulus. The inner sphere radius is 13.97 cm, the outer sphere radius is 16.83 cm and the radius ratio is 1.2. The transient axisymmetric equations of heat, mass, and momentum conservation are solved numerically in spherical coordinates. The transient solution is carried out in time until steady state is achieved. A variable mesh is used to improve resolution near the inner sphere where temperature and velocity gradients are steep. It is believed that this is the first fully two-dimensional analysis of forced flow in a spherical annulus. Local and bulk Nusselt numbers are presented for Reynolds numbers from 4.4 to 440. Computed bulk Nusselt numbers ranged from 2 to 50 and are compared to experimental results from the literature. Inlet flow jetting off the inner sphere and flow separation are predicted by the analysis. The location of wall jet separation was found to be a function of Reynolds number, indicating the location of separation depends upon the ratio of inertia to viscous forces. Wall jet separation has a pronounced effect on the distribution of local heat flux. The area between inlet and separation was found to be the most significant area for heat transfer. Radial distributions of azimuthal velocity and temperature are presented for various angles beginning at the inlet. Inner sphere pressure distribution is presented and the effect on flow separation is discussed.
Scientific and Technical Aerospace Reports
Author: Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1370
Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Energy Research Abstracts
Author: Publisher:
ISBN:
Category : Power resources
Languages : en
Pages : 868
Book Description
Semiannual, with semiannual and annual indexes. References to all scientific and technical literature coming from DOE, its laboratories, energy centers, and contractors. Includes all works deriving from DOE, other related government-sponsored information, and foreign nonnuclear information. Arranged under 39 categories, e.g., Biomedical sciences, basic studies; Biomedical sciences, applied studies; Health and safety; and Fusion energy. Entry gives bibliographical information and abstract. Corporate, author, subject, report number indexes.
An Interferometric and Numerical Study of Free-, Forced-, and Mixed Convection Heat Transfer from Heated Vertical Cylinders
Author: Taemin ChoiPublisher:
ISBN:
Category : Cylinders
Languages : en
Pages : 412
Book Description
Applied Mechanics Reviews
Author: Natural Convection Heat Transfer in The Annulus Passages
Author: Mustafa Z. GheniPublisher:
ISBN: 9783659848414
Category :
Languages : en
Pages : 188
Book Description
Steady, Laminar Forced Convection Heat Transfer in Spherical Annuli
Author: Mehdi Moravej-TorbatyPublisher:
ISBN:
Category : Heat
Languages : en
Pages : 234
Book Description
Author: