Question

Streamline flow are more likely for liquids with
A. High density and low viscosity
B. Low density and high viscosity
C. High density and high viscosity
D. Low density and low viscosity

Answer 1

Hint: Streamline stream is almost certain for fluids having low density. We realize that more prominent the coefficient of consistency of a fluid will be the velocity inclination, subsequently every one of the streams can be separated and the streamline stream is connected with basic velocity.

Complete answer:
The basic velocity is that velocity of fluid stream up to which its stream is streamlined or more which its stream becomes turbulent. As basic velocity (η) and density (ρ) of the fluid as (\[({{V}_{C}})\propto \dfrac{\eta }{\rho }\]) Consequently if the density will be low and viscosity will be high, the estimation of basic velocity will be more.
The correct answer is B.
Streamline stream in liquids is characterized as the stream where the liquids stream in equal layers to such extent that there is no interruption or intermixing of the layers and at a given point, the velocity of every liquid molecule passing by stays steady with time. Here, at low liquid speeds, there are no fierce velocity vacillations and the liquid will in general stream without sidelong blending.
Here, the motion of particles of the liquid follows a specific request as for the particles moving in an orderly fashion corresponding to the mass of the channel with the end goal that the nearby layers slide past one another like playing a game of cards.
Streamlines are characterized as the way taken by particles of liquid under consistent stream conditions. In the event that we speak to the streamlines as bends, at that point the digression anytime on the bend provides the guidance of the liquid velocity by then.

Note: The streamlines in a laminar stream follow the condition of coherence, i.e., Av = steady, where, an is the cross-sectional zone of the liquid stream, and v is the velocity of the liquid by then. Av is characterized as the volume motion or the stream pace of the liquid, which stays consistent for consistent stream.
At the point when the region of the cross-area is more prominent, the velocity of the fluid is lesser and the other way around.