Calcs

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Towel Warmer Moved Away from the Riser: Will It Heat?

Yegor Bolshakov Oct 31, 2026 v1

Will a towel warmer moved to another wall still heat by gravity from the hot-water riser? Flow, temperatures and heat output for your pipes, bends and heights, with the stall and backward-flow cases.

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Sectional radiator: flow extender (pseudo-diagonal connection)

Yegor Bolshakov Oct 30, 2026 v1

Flow and temperature of every section of a sectional radiator connected on one side, diagonally, or through a flow extender tube (pseudo-diagonal), and the hole size that makes a perforated extender heat evenly.

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Virtual Wind Tunnel

Yegor Bolshakov Oct 24, 2026 v1

Potential flow around an airfoil or a cylinder by a panel method with the Kutta condition: lift, circulation, surface pressure, a lift polar and the flow field.

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Solar System in Miniature

Yegor Bolshakov Oct 24, 2026 v2

Eight recognizable planets and Earth's Moon: artistic scale, true relative orbital and rotation periods, and moving day–night boundaries.

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MeowL vs Excel

Yegor Bolshakov Oct 23, 2026 v1

Press ▶, then Space (or tap the drawing) to flap. MeowL dodges spreadsheet errors; every frame is calculated by the same engine as a beam.