Pressure Drop Analysis
Pressure Drop Analysis - Related Videos
01:13
Excess Pressure Inside a Drop and a Bubble
0 Views •
2023
The shape of a small drop of liquid can be considered spherical, neglecting the effect of gravity. This drop can further be considered as two equal hemispherical drops put together due to surface tension. The forces acting on the spherical drop are due to the pressure of the liquid inside the drop, the pressure due to air outside the drop, and the force due to the surface tension acting on the two hemispherical drops. where γ corresponds to the surface tension. Recalling that the force per...
07:21
An All-on-chip Method for Rapid Neutrophil Chemotaxis Analysis Directly from a Drop of Blood
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Cited by 11 •
2017
This article provides the detailed method of performing a rapid neutrophil chemotaxis assay by integrating the on-chip neutrophil isolation from whole blood and the chemotaxis test on a single microfluidic chip.
07:26
Synthesis and Microdiffraction at Extreme Pressures and Temperatures
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Cited by 5 •
2013
The laser heated diamond anvil cell combined with synchrotron micro-diffraction techniques allows researchers to explore the nature and properties of new phases of matter at extreme pressure and temperature (PT) conditions. Heterogeneous samples can be characterized in situ under high pressure by 2D mapping and combined powder, single-crystal and multigrain diffraction approaches.
02:59
Embedding 3D Spheroids in Agarose Gel Drops: A Technique to Preserve Spheroids for Downstream Analysis
0 Views •
2023
This video describes the technique to embed 3D spheroids in agarose gel drops for preservation. The embedded 3D spheroids can be further used for downstream analysis.
09:20
Picoinjection of Microfluidic Drops Without Metal Electrodes
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Cited by 2 •
2014
We have developed a technique for picoinjecting microfluidic drops that does not require metal electrodes. As such, devices incorporating our technique are simpler to fabricate and to use.
FAQs
Pressure drop analysis separates losses associated with wall friction from those caused by geometry changes and local disturbances. Flow rate, pipe diameter, length, surface roughness, fluid properties, and Reynolds number determine the magnitude of the pressure decrease. Considering these variables together helps engineers distinguish resistance distributed along a flow path from losses concentrated at particular components.
A longer flow path generally creates more opportunity for wall friction, while diameter changes alter the relationship between the available passage and the moving fluid. Surface roughness also affects frictional losses at the wall. Including length, diameter, and roughness in the evaluation is essential when comparing layouts or determining whether a restriction reflects system geometry or surface condition.
Valves, fittings, and other geometry changes create local disturbances in addition to friction along straight sections. Their effects can therefore contribute distinct losses within the same flow path. Accounting for these components prevents an evaluation from considering only pipe length and wall friction, which supports more complete assessment of piping, channel, and process-system performance.
A practical workflow begins by identifying the complete flow path and its pipes, channels, valves, fittings, and other components. Engineers then compile the flow rate, pipe dimensions, length, surface roughness, fluid properties, and Reynolds number. Evaluating these inputs together produces a basis for sizing decisions, component selection, and investigation of restrictions that may limit performance.
The calculated pressure loss indicates how much resistance the fluid encounters throughout the system. Engineers can use that result when sizing piping and selecting pumps or control valves, rather than evaluating those elements independently of the flow path. Better-matched components support efficient operation and help reduce the risk that system resistance will limit intended performance.
It is useful when a piping, channel, HVAC, or process system does not perform as intended and a restriction may be limiting flow. By examining friction, geometry, valves, fittings, and the relevant fluid and dimensional factors, engineers can identify where losses arise. The findings support targeted evaluation instead of treating the entire system as a single unexplained problem.
In HVAC and process systems, pressure-drop evaluation connects flow-path resistance with practical design and operating decisions. The results can guide piping layout, pump and control-valve selection, and assessment of restrictive components. Applying the analysis consistently can improve energy efficiency, operating reliability, and system safety while providing a structured basis for design review and troubleshooting.