What is the view factor between two parallel identical squares?

For two aligned square plates (side a, separation d): F depends on a/d ratio. For a/d=1: F≈ 0.20. For a/d=2: F≈ 0.41. For a/d=10: F≈ 0.83. Formula involves integral of geometric terms.

What are reciprocity and summation rules?

Reciprocity: A₁F₁₂ = A₂F₂₁. Summation (enclosure): Σ_j F_ij = 1 (all radiation from surface i hits some surface in enclosure). A convex surface F₁₁ = 0; concave surface can see itself.

How is view factor used in industrial furnace design?

Furnace efficiency depends on view factor between heaters and product. Higher F means more direct radiation without multiple reflections. Aluminum smelting pots arranged to maximize F from induction heaters.

View Factor Radiation Calculator

Calculate radiation view factor F₁₂ for common geometries: parallel plates, coaxial cylinders, sphere to enclosure. Reciprocity: A₁F₁₂ = A₂F₂₁. Summation rule: ΣF₁j = 1 for enclosures.

2D stress state at a point. All stresses in MPa.

σx — Normal Stress X (MPa)

σy — Normal Stress Y (MPa)

τxy — Shear Stress (MPa)

⚙ Mechanical Note: Results are based on standard textbook formulas and ISO/AASHTO references. Always verify critical designs with applicable codes (ISO 898, AASHTO 1993, AISC, Eurocode 3) and a qualified engineer.

How to Use

Enter the values for the patient or scenario you are assessing. Calculate radiation view factor F₁₂ for common geometries: parallel plates, coaxial cylinders, sphere to enclosure. Reciprocity: A₁F₁₂ = A₂F₂₁. Summation rule: ΣF₁j = 1 for enclosures. Use the view factor result to inform your clinical assessment.

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Frequently Asked Questions

What is the view factor between two parallel identical squares?

What are reciprocity and summation rules?

How is view factor used in industrial furnace design?