streamline

shambhu nath · March 10, 2018, 03:17

why there is no flow across the streamline?

piu58 · March 10, 2018, 03:27

Streamlines are defined this way.

ashokac7 · March 12, 2018, 01:26

Uwe Pilz is absolutely right. But to go into more details, look at the definition of stream lines. It says that tangent on any point of stream line gives the direction of velocity (i.e. Flow). So flow direction will be tangential to stream line so no flow normal to it. Like this (for said criteria) we defined the stream function. This stream function is used to draw stream line in our CFD package. Any single stream line has constant value of stream function.

FMDenaro · March 12, 2018, 03:46

Just to add that the definition is expressed in term of the equations

dr x v =0

March 10, 2018, 03:17	streamline	#1
shambhu nath New Member Join Date: Mar 2018 Posts: 1 Rep Power: 0	why there is no flow across the streamline?

March 10, 2018, 03:27		#2
piu58 Senior Member Uwe Pilz Join Date: Feb 2017 Location: Leipzig, Germany Posts: 744 Rep Power: 15	Streamlines are defined this way. FMDenaro likes this. __________________ Uwe Pilz -- Die der Hauptbewegung überlagerte Schwankungsbewegung ist in ihren Einzelheiten so hoffnungslos kompliziert, daß ihre theoretische Berechnung aussichtslos erscheint. (Hermann Schlichting, 1950)

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March 12, 2018, 01:26		#3
ashokac7 Senior Member Ashok Chaudhari Join Date: Aug 2016 Location: Pune, India Posts: 260 Rep Power: 10	Uwe Pilz is absolutely right. But to go into more details, look at the definition of stream lines. It says that tangent on any point of stream line gives the direction of velocity (i.e. Flow). So flow direction will be tangential to stream line so no flow normal to it. Like this (for said criteria) we defined the stream function. This stream function is used to draw stream line in our CFD package. Any single stream line has constant value of stream function.

March 12, 2018, 03:46		#4
FMDenaro Senior Member Filippo Maria Denaro Join Date: Jul 2010 Posts: 6,768 Rep Power: 71	Just to add that the definition is expressed in term of the equations dr x v =0