Revision as of 17:12, 28 November 2011 by Feng (talk | contribs) (Created page with 'Category:PMOR benchmark, linear, time invariant, three physical parameters, first order system ==description== An anemometer, a flow sensing device, consists of a heater an…')
description
An anemometer, a flow sensing device, consists of a heater and temperature sensors before and after the heater, placed either directly in the flow or in its vicinity. They are located on a membrane to minimize heat dissipation through the structure. Without any flow, the heat dissipates symmetrically into the fluid. This symmetry is disturbed if a flow is applied to the fluid, which leads to a convection on the temperature field and therefore to a difference between the temperature sensors (see Fig.1 below) from which the fluid velocity can be determined.