PPT-Convection:

Challenges for the Next Decades NASA Earth Science Division Workshop NASAAmes 68 May 2014 Robert A Houze Jr University of Washington Fair weather cumulus Cumulus congestus Cumulonimbus Single cell. #9] . This experiment probably was set up to determine —. F. how much mechanical energy the battery produces. G. the pH of water during electrolysis. H. the pressure created by an electric current. By Ross . Nuechterlein. Convection. Convection.  is the movement of molecules within fluids and is one of the major modes of heat and mass transfer in liquids and gas.. Buoyancy . Buoyancy.  is an upward acting force exerted by a fluid , that opposes an object's weight.. extratropical. circulation. Steven Feldstein and Michael Goss. The Pennsylvania State University. IUGG, Prague, June 25, 2015. Questions. :. . 1. . What is the relationship between interference, Arctic sea ice, and tropical convection and how does it impact the . Brian . Mapes. RSMAS. , University of Miami. Harvard, Oct 17 2009. (personal) historical moment. Two very old ideas. , . fiiinally. coming to fruition?. 1995: study convection sensitivities. inhibition vs. bulk instability (CAPE) controls. For a constant property, laminar flow a . similarity solution. exists for the flow field . u. (. y. ). local boundary layer thickness. local skin friction coefficient. average skin friction coefficient. Convection in the boundary layer occurs to transport heat moisture, and momentum from surface to free atmosphere. Two common scenarios:. 1) Daytime solar heating 2) cold-air outbreaks, lake effect. Weather Systems – Fall 2015. Outline:. a. Stability Indices. b. Wind Shear and . Helicity. c. How to relate to predicted / observed convective weather. Convective Parameters. Weather Systems – Fall 2015. 5 FINITE ELEMENTS FOR HEAT . TRANSFER PROBLEMS. FINITE . ELEMENT ANALYSIS AND DESIGN. Nam-Ho . Kim. HEAT CONDUCTION ANALYSIS. Analogy between . Stress . and . Heat Conduction Analysis. In finite element viewpoint, two problems are identical if a proper interpretation is given.. The process which heat or electricity is . directly. transferred through a substance when there is a difference in temperature or electrical potential. . Conduction = TOUCHING . Conduction. Convection. Heat Transfer. E. nergy always moves when it is near something that has less energy(Heat is energy). EXAMPLE: Hot . objects in a cooler room will cool to room . temperature, and cold . objects in a warmer room will heat up to room temperature.. Free Convection (or Natural Convection). fluid motion . induced by . buoyancy forces. buoyancy forces . arise when there are . density gradients . in a fluid and a . body force. . proportional to density arises . What is CONVECTION?. Convection is the process by which heat is transferred. A warmed liquid or gas comes into contact with an unheated space. Heat transfer from liquid to surrounding air. We see examples of this every day:. 1. Aim : . develop an appreciation for the physical phenomena associated with internal flow and to obtain convection coefficients. Contents:. Entrance region . vs. fully developed region. Hydrodynamic effect consideration. Beihang University, China. Key points. . The toroidal fields are produced in the bulk of the convection zone by the latitudinal shear. The tachocline is unimportant in our model. . Zebin Zhang & .