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WorksheetsDay 30-Oct 18-worksheet-Diploma-Kinematics part 2
Total questions: 15
Worksheet time: 10mins
If all components of angular velocity are zero, the nature of flow is —
Steady flow
Compressible flow
Irrotational flow
Rotational flow
Match
Vorticity
Flow rotationality measure
Stream function
Constant on streamline
Velocity potential
Based on laplace equation
The equipotential lines in a potential flow are —
Tangent to streamlines
Orthogonal to streamlines
Parallel to streamlines
Coincident with streamlines
The normal acceleration in a fluid particle is caused due to —
Change in magnitude of velocity
Change in direction of velocity
Change in vorticity
Curl of velocity potential
Velocity potential function exists for both rotational and irrotational flows.
True
False
In an irrotational flow, the circulation around any closed path is zero.
True
False
Stream function exists only for 2-D compressible flow.
True
False
The velocity potential function (Φ) must satisfy (a) equation for possible incompressible irrotational flow.
Along a streamline, the value of stream function (ψ)
is constant
Varies
The difference in values of stream function between two streamlines gives (a) per unit width.
In a flow net, streamlines and equipotential lines intersect at (a) degrees.
The tangential acceleration of a fluid particle is due to change in (a)
Find discharge from stream function difference
Given: ψ1 = 0.40 m²/s, ψ2 = 0.10 m²/s; channel width B = 2 m.
(a)
Find normal (centripetal) acceleration on a curved path
Given: speed V = 4 m/s, radius R = 2 m.
(a)
The velocity components of a two-dimensional flow field are given by
u = 5y and v = –5x (m/s), where x and y are in metres.
Find:
1️⃣ Vorticity component ωz
2️⃣ Type of flow (Rotational or Irrotational).
(a)
