TSI toolmaking co. uses Q as "standard flow rate", but they make an instrument that converts Q to "VolumetricFlow" by applying a density correction. See the link for the formula. Another example of this use of V is First-Sensor engineering Co., which uses the symbol V as a translation of volumetric flow at standard conditions to true mass flow.

Mar 4, 2014 · Want a 'rate' symbol for volume (V), which would have dot above the V. Anyone? I see Z, and lots of others, but not V!

Nov 13, 2010 · Harassment is any behavior intended to disturb or upset a person or group of people. Threats include any threat of violence, or harm to another.

Jun 19, 2023 · If double flow rate heat is double as well. If ΔT is double then heat is double. But when arranged for Vdot and keeping heat keep constant, increasing ΔT means less flow. I imagine two apparatus. I want flow rate of both. Apparatus 1 has Qdot and ΔT, appartus 2 has Qdot but 2ΔT. With same Qdot, but 2ΔT apparatus 2 has half flow rate.

Oct 16, 2020 · I want to calculate the flow rate of water through holes in a mesh. In the following hypothetical situation water is flowing through a 13mm diameter pipe at a velocity of 3 meters per second and a pressure of 0.55 mega pascals.

Mar 3, 2019 · $\begingroup$ @Navaro They aren't really the same name. $\dot{m} = \rho V A$ is the mass flow rate through a surface or through a system. $\dot{m} = dm/dt$ is the change of mass in a system, which is not called mass flow rate. It is due to the change of density within the system (the volume integral) and mass flow rate into/out of the system ...

Jul 1, 2016 · Hey there, maybe someone can help me with my problem: I am currently drawing a flow scheme for a microfluidic system. The system contains pumps, pipes, tubes, valves etc. The problem is i cannot find a standard process flow diagram symbol representing a 7/6 selector port valve (see here) Does...

Aug 30, 2007 · Then select the button to the right that says "Equation Editor". Type your letter (Q) then select the third box (which has symbols like ?). Select the third row first column symbol (which looks like a box with a dot over it). Hit "esc" Don't ask how to make it non-italicized — haven't figured that out! Patricia Lougheed

Mar 4, 2021 · Heat transfer power does refer to rate of heat flow, $\dot Q$, generally expressed as Joules/second or watts. For heat transfer by conduction and convection, the rate of heat flow is directly proportional to temperature difference, governed by Fourier's Law of Conduction and Newton's Law of Cooling, respectively.

Aug 11, 2022 · I just read an expression relating to internal flow and pressure drop from here (Derivation of Flow Rate and Pressure Drop Relationships). I am curious about how to derive this formula.