convex side, 1” the Convex side: diametrical section, and 3 the enclosure. Equal external cylinders Case View factor Plot From a of radius to an equal cylinder at R a distance between H centres (it must be with H>2R), hH/R. (e.g. for H=2R, F12=1/21/=0.18) Note. See the method, above. Equal external hemi-cylinders Case View factor Plot From a hemi-cylinder of radius to an R (limit for ) r→∞: cylinder separated a (limit for ) r→0: distance with W, rR/W (wW/R=1/r). Let the strip (e.g. for r=1, F12=0.11, F13=0.05) in between be (3). Planar strip to cylinder Case View factor Plot From frontal surface of strip (1) of width to a W (2) of radius at with R xv/h=(W/2)/H a distance between H centres, with (e.g. for i.e. vW/(2R) W=R=H, v=1/2, h=1, and hH/R>1. x=1/2, F12=0.927, F21=0.148) From frontal surface of off-centre strip of width to a cylinder of radius W For W=W2W1: at a distance to the R H strip plane. The solution For W=W2W1: is the composition of a For & (with W1=0 W=W2 xW/H): strip of with and a W1 (e.g. for & i.e. W1=0 W2=R=H, strip of width with W2, v1=0, v2=1, h=1, x1=0, x2=1, v1W1/R, v2W2/R, F12=0.463, F21=0.074) hH/R>1, x1W1/H, x2W2/H.
convex side, 1” the diametrical section, and 3 the enclosure. Convex side: Equal external cylinders Case View factor Plot From a of radius R to an equal cylinder at a distance H between centres (it must be H>2R), with hH/R. Note. See the method, above. (e.g. for H=2R, F12=1/21/=0.18) Equal external hemi-cylinders Case View factor Plot From a hemi-cylinder of radius R to an separated a distance W, with rR/W (wW/R=1/r). Let the strip in between be (3). (limit for r→∞: ) (limit for r→0: ) (e.g. for r=1, F12=0.11, F13=0.05) Planar strip to cylinder Case View factor Plot From frontal surface of strip (1) of width W to a cylinder (2) of radius R at a distance H between centres, with vW/(2R) and hH/R>1. with xv/h=(W/2)/H (e.g. for W=R=H, i.e. v=1/2, h=1, x=1/2, F12=0.927, F21=0.148) From frontal surface of off-centre strip of width W to a cylinder of radius R at a distance H to the strip plane. The solution is the composition of a strip of with W1 and a strip of width W2, with v1W1/R, v2W2/R, hH/R>1, x1W1/H, x2W2/H. For W=W2W1: For W=W2W1: (e.g. for W1=0 & W2=R=H, i.e. v1=0, v2=1, h=1, x1=0, x2=1, F12=0.463, F21=0.074) For W1=0 & W=W2 (with xW/H):
Radiation%20View%20factors.docx