Questions tagged [fluid]

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Finding flow rate contribution from difference in temperature

Currently I am working on a DTS(Distributed Temperature Sensor)data and PLT data and I need to figure out a relationship between temperature and fluid flow-rates in various locations (depths) of the ...
28 views

Method of Hydraulic Resistances (Crane TP 410), how accurate is it really?

A bit vague but a question for you working engineers out there. For a couple of years now I've been designing fluid systems, mostly using Crane's TP 410 as the guiding resource for pressure drop ...
23 views

Volumetric flow in a pipe from velocity

I think I'm missing something important here. For a fluid with a velocity $u$ in a pipe with cross section area $S$, the volumetric flow rate is equal to: $$Q_v = uS$$ If we now consider vectors, ...
62 views

the angle of water surface in a moving car

in this picture, there is a container of water and it is moving on the slope. we want the acceleration of the container while the angle of water surface is parallel to the slope. so the book says the ...
29 views

Fluid for mechanical lubrication and hydraulic connection to plastic/rubber parts

I have a piston made of anodized aluminium and stainless steel with nitrile seals which I need to connect hydraulically to our system which mainly consists of silicone rubber with polycarb and acrylic ...
90 views

Fluid dynamics of a valve

I am new to fluid mechanics and am trying to understand the fluid mechanics of a simple valve. Let's assume we have a simple tube, which is supplied with a constant stream of liquid using a pump. At ...
51 views

351 views

O-Ring Selection for a round rectangle groove

I'm designing a water proof case for a power bank to be used in an occasional underwater condition. The input and out put port components already have a gasket or sealing ring. Now to close the case I ...
15 views

Help finding a thixotropic suspension with specific properties

I currently doing research on 3d printing on circuit boards. The technique we are using is to put a conductive material, I.e ceramics/metal in a gel/polymer, to print the suspension and then when is ...
169 views

Fluid Statics Problem

I have been attempting this question for a while now. Could anyone give me a hand? The question and the work I have done so far is below. My final "answer" is P (force required to keep the gate ...
31 views

Can a cellulose sponge be used as an actuator to shut off flow of water temporarily?

In non-recirculating hydroponic systems, we want to fill containers with nutrient rich water let's say up to an inch, let the plants take up the water , give the plants some air time for a few hours, ...
93 views

Calculating the radius of a hole for a desired outflow rate

I am tasked with finding the radius of a hole at the bottom of a tank to obtain the desired outflow rate when the tank is full. The tank is a cylinder with dimensions Height: 4.8m and Radius: 1.79m. ...
72 views

Velocity of Fluid Flow

If a water pipe has a large diameter at the start and a small diameter at the end what part of the pipe would the water flow faster?
478 views

How to calculate flow rate of viscous fluids through a funnel-shaped needle?

How would you determine the flow rate of a liquid that flows through a narrow microneedle channel and then through the opening of a funnel, i.e. pouring liquid through the other end of a funnel? I'...
I'm having trouble understanding the 4th step to the Buckingham Pi theorem. My variables are: weight ($\text{N}$) : $\text{MLT}^{-2}$ h ($\text{m}$): $\text{L}$ Diameter ($\text{m}$): $\text{L}$ ...