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Results for “hydraulics”
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Occurrence and behavior of uranium and thorium series radionuclides in the Permian shale hydraulic fracturing wastes
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Using deep learning to explore local physical similarity for global-scale bridging in thermal-hydraulic simulation
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CFD-aided development of thermal-hydraulic model for flow in mini-zigzag channels
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Deep hybrid modeling of chemical process: Application to hydraulic fracturing
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Hydraulic properties of sediments from the GC955 gas hydrate reservoir in the Gulf of Mexico
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Metal additively manufactured wavy fin cold-plate architecture for improved thermal-hydraulic performance
Rapid growth in artificial intelligence and data center workloads demands high-performance liquid cooling to manage increasing chip power. This study presents two metal-additive-manufactured cold plates with sinusoidal fins, constant-amplitude wavy fins and linearly variable-amplitude wavy fins and compares them against metal-additive-manufactured straight fins using experiments conducted at 1 kW heat dissipation as well as high-fidelity 3D conjugate computational fluid dynamic simulations. The cold plates were printed in AlSi10Mg material and underwent design using a Python-automated workflow prior to manufacture and testing. The experiments show that wavy fins reduce the normalized thermal resistance by 35 to 45 % at water flow rates from 1 to 4 LPM. At a fixed 20 kPa pressure drop, the variable-waviness design lowered peak surface temperature by 9 °C and thermal resistance by 51 %, while edge-channel maldistribution in the constant wavy fin design limited gains. A thermal resistance breakdown revealed that 55–63 % of the total thermal resistance in wavy designs comes from base heat conduction, 27–33 % from fin heat conduction, and 9–13 % from fin heat convection, indicating the need to address conduction bottlenecks. Parametric sweeps identify a 3 mm fin pitch as optimal, and that horizontal inlet/outlet manifolds further reduce pressure drop by 30–60 % and thermal resistance by 9–16 % relative to vertical inlet-outlet manifolds. The results yield comprehensive guidelines for fin geometry, manifold alignment, material selection and additive-manufacturing constraints to realize high-performance liquid-cooled cold plates for power-dense electronics.
Assessing the hydraulic and mechanical impacts of heat generating radioactive waste at the whole repository scale
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Validating the application of cyclic hydraulic pressure pulses to reduce breakdown pressure in granite
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