Gas pressure through the turbine section will generally
- increase.
- remain the same.
- decrease.
Explanation from PART66Online
As the gas expands and gives up energy across each turbine stage, its pressure falls progressively through the turbine section. This pressure drop is what drives the blades and is converted into shaft work to turn the compressor. Gas pressure therefore decreases through the turbine rather than increasing or staying constant.
C
charlie asked · 25 Apr 2013
y is it decrease?
Community Comments (7)
P
PART66Online
28 Apr 2013
Hello.
Yes, it decreases because turbine absorbs gas energy.
Yes, it decreases because turbine absorbs gas energy.
S
spartanspartan
30 Apr 2013
it's divergent
S
sairam
25 Jul 2013
Because turbine section is convergent so velocity increase and pressure decrease as well as temperature decrease
S
sairam
25 Jul 2013
previously posted is wrong...i think in combustion the velocity will increase and pressure slightly decrease after combustion chamber the velocity remain increase and pressure decrease at turbine section
S
sairam
25 Jul 2013
but check it, I could be wrong.
P
PART66Online
25 Jul 2013
Good explanation about that question can be found here, check "Turbine" chapter: skybrary.aero/bookshelf/books/1621.pdf
J
Jordi
7 Jul 2020
it decreases and in the compressor it increases.
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