Question:
Adverse pressure gradient implies that ______.
Adverse pressure gradient implies that ______.
Show Hint
Think about whether the pressure change is pushing the flow forward or holding it back near a wall.
Updated On: Jul 28, 2026
- pressure decreases in the direction of flow
- pressure increases in the direction of flow
- pressure is zero everywhere within the flow field
- pressure is uniform (non-zero) everywhere within the flow field
Show Solution
Verified By Collegedunia
The Correct Option is B
Solution and Explanation
The term "pressure gradient" describes how pressure changes along the direction of flow, and whether that change helps or fights the flow decides if it is called favourable or adverse.
- pressure decreases in the direction of flow: this is a favourable pressure gradient, since falling pressure pushes the flow forward and speeds up the fluid, so it is wrong here.
- pressure increases in the direction of flow: rising pressure works against the flow, slows the fluid down near the wall, and can eventually reverse it, which is exactly what an adverse pressure gradient means. This is the correct choice.
- pressure is zero everywhere within the flow field: this describes no pressure at all, not a gradient, so it does not match the question.
- pressure is uniform (non-zero) everywhere within the flow field: uniform pressure means zero gradient, which is neither favourable nor adverse, so this is also wrong.
So an adverse pressure gradient means the pressure increases in the direction of flow, option B.
Was this answer helpful?
0
0
Top GATE NM Fluid Mechanics and Marine Hydrodynamics Questions
- The sum of the static pressure and dynamic pressure at a point in a fluid flow is called the ________.
- Identify the range of Reynolds number (Re) for a creeping flow.
- The ratio of the magnitudes of vorticity to rate of rotation in a fluid flow is ________.
- In a laminar boundary layer, the ratio of boundary layer thickness (\( \delta \)) to the corresponding displacement thickness (\( \delta^* \)) lies between ________.
- Which one of the following wave energy spectra is formulated for two peaks?
View More Questions
Top GATE NM Boundary Layer Theory Questions
- Consider a steady, two-dimensional, laminar, incompressible flow of water over a horizontal flat plate of length \(L\) with Reynolds number, \(Re_L = 10^4\). The flat plate is aligned with the incoming free-stream flow. The \(x\)-axis is along the length of the plate while the \(y\)-axis is normal to the plate. The respective velocity components are \(u\) and \(v\).
Which of the following statements is/are TRUE? - Consider the flow of water over a smooth curved wall surface. It is given that the flow separates at some location R on the surface, known as the separation point.
Pick the CORRECT option(s).
Top GATE NM Questions
- If \( \rightarrow \) denotes increasing order of intensity, then the meaning of the words [dry \( \rightarrow \) arid \( \rightarrow \) parched] is analogous to [diet \( \rightarrow \) fast \( \rightarrow \) \(\_\_\_\_\_\_\_\_\)]. Which one of the given options is appropriate to fill the blank?
- If two distinct non-zero real variables \( x \) and \( y \) are such that \( (x + y) \) is proportional to \( (x - y) \), then the value of \( \frac{x}{y} \) is:
- Consider the following sample of numbers: \[ 9, 18, 11, 14, 15, 17, 10, 69, 11, 13 \] The median of the sample is:
- The number of coins of ₹1, ₹5, and ₹10 denominations that a person has are in the ratio 5:3:13. Of the total amount, the percentage of money in ₹5 coins is:
- For positive non-zero real variables \( p \) and \( q \), if \[ \log \left( p^2 + q^2 \right) = \log p + \log q + 2 \log 3, \] then the value of \( \frac{p^4 + q^4}{p^2 q^2} \) is:
View More Questions