Pipeyoga011

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STATIC PRESSURE

This bears reference to the topic "Static Fluid Pressure". My question to the members is :

When we say Pitot -tube pressure we mean Dynamic Pressure and when we say Static pressure we are reffering to simple hole drilled on the surface of the conduit ( say pipe)opening in to a tube open to atmosphere and long enough to hold the water thrown by STATIC Head !

Now if instead of the Water we assume Steam (560 deg.C, 160 bar(a) ) as being the flowing media and the small hole be replaced with a "Tee" followed by a very long topsy turvy Piping closed with a valve at the other end( to visualise, assume simple By-pass connection of Main steam supply pipe)

My question arises here as follows :

1. Will the fluid ,flowing into the branching pipe, have Static Pressure only i.e; to say Elevation Head plus the fluid pressure corresponding to its pressure at that temp ?

2. Since the fluid is being stopped at the end of its travel ( assuming branch run long enough than the Dynamic head) , would the pressure and temp in the branch be termed as Stagnation Temp & Pressure ? If so, the stagnation pressure and temp. should come in to picture in the branch line only after the Dynamic head length has passed. This again is perplexing as to how in a particular conduit one can have two pressures !, though at a distance ?

3. Also , if the steam is flowing in the main line ( continuously consumed by Turbine) , and the bypass line ( branch) is closed at the other end. Would'nt the Fast flowing steam in Main pipe try to breath-in the fluid( steam) in branch. ( The principle on which Gas stove works viz ; Fast flowing Gas breaths the air in through the holes provided in the gas supply tube) ??

Kindly shed some light as to how to picturise the phenomenon.

regards,

pipeyoga 19:12, 6 September 2010 (UTC)

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Bumping posts on the RD

Bumping posts on the RD to the bottom of the page is considered vandalism. It is very much disliked by the other editors and, as a result, will cause most editors to refuse to answer the question you bumped or any other questions you ask. If you have a question that hasn't been answered to the extent that you like, you should attempt to reword the question to try and get a better answer. Chances are, the question you bumped didn't get the answer you wanted because of the wording - so reposting it as it is won't result in anything positive. -- kainaw™ 15:47, 17 October 2011 (UTC)

my sincere thanks for your suggestion... I didnot exactly know how to bring the question back... actually wiki is different from other forums ... i will keep this info in mind.pipeyoga 16:13, 17 October 2011 (UTC)