A method for determining a flow rate of a fluid and flow measuring device

The invention relates to a method for determining a flow parameter (v) a fluid (14), comprising the steps of: (a) passing the fluid (14) through a through conduit (12), (b) pulse-like heating of the fluid (14) by means of a the heating element (24), (c) measuring a time-dependent temperature (T) by means of a thermometer (34) in a thermometer distance (x According to the invention it is provided that the calculation of the flow parameter (v) is carried out on the basis of an equation that involves a reduction in the flow rate in an environment of the thermometer (34, 36).