Determination of viscosity with Ostwald viscometer
... them be filled with a fluid (either gas or liquid). If the upper plate is dragged by a force F in the y direction, then it shall move with a constant vy velocity. So the plate will move with a constant velocity, having zero acceleration: the sum of the forces that act on the plate is zero. Thus, aga ...
... them be filled with a fluid (either gas or liquid). If the upper plate is dragged by a force F in the y direction, then it shall move with a constant vy velocity. So the plate will move with a constant velocity, having zero acceleration: the sum of the forces that act on the plate is zero. Thus, aga ...
30.2 Pre entrained hydraulic jump (PHJ)
... concentration distribution and r2 = 2.0, 2.5, and 3.0 for rectangular, parabolic and triangular distribution respectively. They concluded that the principal effect of air entrainment in stilling basins is bulking which leads to considerably greater and more efficient energy dissipation. In stilling ...
... concentration distribution and r2 = 2.0, 2.5, and 3.0 for rectangular, parabolic and triangular distribution respectively. They concluded that the principal effect of air entrainment in stilling basins is bulking which leads to considerably greater and more efficient energy dissipation. In stilling ...
Problem 1. Water flows steadily from a large closed tank as shown in
... Problem 3. A viscous fluid (specific weight 1.26 kN/m3, viscosity 1.4 Pa.s) is contained between two infinite, horizontal parallel plates as shown in the figure. The fluid moves between the plates under the action of a pressure gradient and the upper plate moves with velocity U=6x10-3 m/s, while the ...
... Problem 3. A viscous fluid (specific weight 1.26 kN/m3, viscosity 1.4 Pa.s) is contained between two infinite, horizontal parallel plates as shown in the figure. The fluid moves between the plates under the action of a pressure gradient and the upper plate moves with velocity U=6x10-3 m/s, while the ...
Chap09c - MSU Physics
... Lead has a greater density than iron, and both are denser than water. Is the buoyant force on a solid lead object (a) greater than, (b) less than, or (c) equal to the buoyant force on a solid iron object of the same dimensions? ...
... Lead has a greater density than iron, and both are denser than water. Is the buoyant force on a solid lead object (a) greater than, (b) less than, or (c) equal to the buoyant force on a solid iron object of the same dimensions? ...
Document
... 1. What conclusion can be made from the above result? 2. If we are to carry out an MEB on the system (ΣF is significant), what result should we expect? What is ΣF is negligible? ...
... 1. What conclusion can be made from the above result? 2. If we are to carry out an MEB on the system (ΣF is significant), what result should we expect? What is ΣF is negligible? ...
Transport Phenomena
... In turbulent flow the force may be a function of time, not only because of the turbulent fluctuations, but also because of occasional ripping off of the boundary layer from the wall, which results in some distances with long time scales. In laminar flow it is understood that the force will be indepe ...
... In turbulent flow the force may be a function of time, not only because of the turbulent fluctuations, but also because of occasional ripping off of the boundary layer from the wall, which results in some distances with long time scales. In laminar flow it is understood that the force will be indepe ...
Mechanical Rate - U
... is called frictional drag. Turbulent flow is irregular flow with eddies and whorls that mix the fluid. Turbulence causes a wake behind a moving object. The pressure difference between the fluid outside the wake and the fluid inside the wake causes pressure drag. ...
... is called frictional drag. Turbulent flow is irregular flow with eddies and whorls that mix the fluid. Turbulence causes a wake behind a moving object. The pressure difference between the fluid outside the wake and the fluid inside the wake causes pressure drag. ...
CHAPTER 14
... In turbulent flow, the tubes with rough surfaces have much higher friction factors than the tubes with smooth surfaces. In the case of laminar flow, the effect of surface roughness on the friction factor is negligible. Chapter 8, Solution 9C. The friction factor f remains constant along the flow dir ...
... In turbulent flow, the tubes with rough surfaces have much higher friction factors than the tubes with smooth surfaces. In the case of laminar flow, the effect of surface roughness on the friction factor is negligible. Chapter 8, Solution 9C. The friction factor f remains constant along the flow dir ...
Fully Developed Couette Flow - Pharos University in Alexandria
... Stream and Potential Functions • If a stream function exists for the velocity field u = a(x2 -- y2) & v = - 2axy & w = 0 Find it, plot it, and interpret it. • If a velocity potential exists for this velocity field. Find it, and plot it. ...
... Stream and Potential Functions • If a stream function exists for the velocity field u = a(x2 -- y2) & v = - 2axy & w = 0 Find it, plot it, and interpret it. • If a velocity potential exists for this velocity field. Find it, and plot it. ...
Chapter 2
... • Most of the common fluids (water, air, oil, etc.) • “Linear” fluids Although any shear stress could produce a fluid deformation, a higher deformation rate requires a larger shear stress (or shear force). Therefore, a fluid still has the resistive characteristics against an applied shear stress in ...
... • Most of the common fluids (water, air, oil, etc.) • “Linear” fluids Although any shear stress could produce a fluid deformation, a higher deformation rate requires a larger shear stress (or shear force). Therefore, a fluid still has the resistive characteristics against an applied shear stress in ...
Abstract-Sumer PEKER - ic-rmm1
... The shear and extensional viscosities effective in flow through converging pipes is investigated for the case of 94% W/O HIPRE as a function of prestirring rate before flow. The internal phase consisted of 1% sorbitol solution, and the external phase, a mixture of mineral oil and polyoxyethelene (2) ...
... The shear and extensional viscosities effective in flow through converging pipes is investigated for the case of 94% W/O HIPRE as a function of prestirring rate before flow. The internal phase consisted of 1% sorbitol solution, and the external phase, a mixture of mineral oil and polyoxyethelene (2) ...
Chapter Four Fluid Dynamic
... between two points and is constrained by the pipe walls. The direction of the flow is always from a point of high pressure to a point of low pressure. - If the fluid does not completely fill the pipe, such as in a concrete sewer, the existence of any gas phase generates an almost constant pressure a ...
... between two points and is constrained by the pipe walls. The direction of the flow is always from a point of high pressure to a point of low pressure. - If the fluid does not completely fill the pipe, such as in a concrete sewer, the existence of any gas phase generates an almost constant pressure a ...
Exam2 - Purdue Engineering
... 15) The velocity potential of a uniform flow in the y direction with speed 2 and a source of strength 0.1π located at x=y=0 is: a. 2 x + .05 ln(r) b. 2 y + .05 ln(r) c. 2 x + .05 θ d. 2 y - .05 θ e. 2 y - .05 ln(r) (where r and θ are polar coordinates centered at x=y=0) 16) Water flows through a ci ...
... 15) The velocity potential of a uniform flow in the y direction with speed 2 and a source of strength 0.1π located at x=y=0 is: a. 2 x + .05 ln(r) b. 2 y + .05 ln(r) c. 2 x + .05 θ d. 2 y - .05 θ e. 2 y - .05 ln(r) (where r and θ are polar coordinates centered at x=y=0) 16) Water flows through a ci ...
MECHANISM CLUSTER First Year B.Eng/M.Eng 2007 Solutions to
... rate 1 liter/min. The flow is fully developed. Is this flow laminar or turbulent? Solution: Reynolds number: Re = ...
... rate 1 liter/min. The flow is fully developed. Is this flow laminar or turbulent? Solution: Reynolds number: Re = ...
Turbulence
In fluid dynamics, turbulence or turbulent flow is a flow regime characterized by chaotic property changes. This includes low momentum diffusion, high momentum convection, and rapid variation of pressure and flow velocity in space and time.Flow in which the kinetic energy dies out due to the action of fluid molecular viscosity is called laminar flow. While there is no theorem relating the non-dimensional Reynolds number (Re) to turbulence, flows at Reynolds numbers larger than 5000 are typically (but not necessarily) turbulent, while those at low Reynolds numbers usually remain laminar. In Poiseuille flow, for example, turbulence can first be sustained if the Reynolds number is larger than a critical value of about 2040; moreover, the turbulence is generally interspersed with laminar flow until a larger Reynolds number of about 4000.In turbulent flow, unsteady vortices appear on many scales and interact with each other. Drag due to boundary layer skin friction increases. The structure and location of boundary layer separation often changes, sometimes resulting in a reduction of overall drag. Although laminar-turbulent transition is not governed by Reynolds number, the same transition occurs if the size of the object is gradually increased, or the viscosity of the fluid is decreased, or if the density of the fluid is increased. Nobel Laureate Richard Feynman described turbulence as ""the most important unsolved problem of classical physics.""