CANARINA:   DISPER:   SOLUTIONS: DISPER     COMMANDS:   ALGORITHMS:   EMISSIONS:   GRAPHS: Algorithms V · software · industrial air exhaust                   DISPER: 1 2 4 5 6  7 9 10 11 13 14 15   Stability Parameter For stable situations, the stability parameter, s, is calculated: s=g[(dT/dz)/Ta]         (16) As a default approximation, for stability class E (or 5) dT/dz is taken as 0.020 K/m, and for class F (or 6), dT/dz is taken as 0.035 K/m. Stable - Crossover Between Momentum and Buoyancy For cases with stack gas temperature greater than or equal to ambient temperature, it must be determined whether the plume rise is dominated by momentum or buoyancy. The (DT)c  is determined and solving for DT, as follows: (DT)c=0.019582 Ts vs s1/2      (17) If the difference between DT exceeds or equals (DT)c, plume rise is assumed to be buoyancy dominated, otherwise plume rise is assumed to be momentum dominated. Stable - Buoyancy Rise For situations where DT exceeds (DT)c as determined above, buoyancy is assumed to dominate. The distance xf is determined by xf=2.0715 us s-1/2        (18) The plume height, he, is determined by he=hs+2.6 [Fb/(uss)]1/3         (19) Stable - Momentum Rise Where the stack gas temperature is less than or equal to the ambient air temperature, the assumption is made that the plume rise is dominated by momentum. Then, he=hs+1.5[Fm/(uss1/2)]1/3       (20) The equation for unstable-neutral momentum rise is also evaluated. The lower result of these two equations is used as the resulting plume height.     industrial air exhaust Industrial air exhaust: With this application you will be able to import images and pictures (previously saved BMP files) to evaluate industrial pollution, air pollution from cars,  and pollution from diversal sources.