METHOD FOR DETERMINING A TRANSITION POINT AND/OR FOR DETERMINING WALL SHEAR STRESSES ON SURFACES AROUND WHICH SURFACES A FLOW CIRCULATES, AND MEASURING DEVICE

摘要

The invention relates to a method for determining a transition point and/or for determining wall shear stresses on surfaces (1) around which surfaces a flow circulates by means of thermography, wherein the method comprises the following steps: providing a surface with a heat insulation layer (3) on the surface (1) around which a flow is to circulate, circulating a flow around the surface (1) around which a flow is to circulate, heating the surface (1) around which a flow circulates, contactless measuring of the emitted flow intensity of the surface (1) around which a flow circulates by means of a camera system (7), determining at least one temperature decay coefficient on the surface (1) around which a flow circulates and ascertaining the transition point and/or the wall shear stresses on the surface (1) around which a flow circulates.