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Fse-virtual-origin-v2.svg (SVG file, nominally 900 × 600 pixels, file size: 37 KB)
Summary
Virtual origin divided by fire diameter against Q^2/5/D for four correlations, with the methyl alcohol, heptane and lubricating oil examples. Based on Heskestad (2002), pp. 2-10 to 2-11, and Iqbal and Salley (2004), p. 9-11.
Original illustration for Virtual origin, level 4 Expert.
- Source basis: Heskestad (2002), p. 2-10 (equations 32, 34 and 36, Figure 2-1.7, redraw from the equations, do not copy) and p. 2-11 (heptane example); Iqbal and Salley (2004), p. 9-11 (lubricating oil example, z0/D = 0.22)
- Alt text: Line chart of four correlations for the virtual origin divided by fire diameter, rising from below zero to above zero as heat release rate increases.
Licensing
New drawing by Fire Safety Academy. © Fire Safety Academy.
File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 17:15, 2 November 2026 | | 900 × 600 (37 KB) | Jan (talk | contribs) | Watermark: Fire Safety Academy logo icon, 70 px, 45 % opacity |
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