Canarina
Spain ˇ Canarina
software
DISPER software: Air pollution map produced by three different stacks (XZ-plane)
Canarina software for analysis of air pollution in environment: air pollution control, environmental engineering, environmental consultancy service, environment simulation, environmental modeling and environmental impact assessment. Air dispersion software: ISC 110 heat transfer
CANARINA: Home - Air pollution ˇ DISPER - Noise pollution ˇ CUSTIC - Water pollution ˇ DESCAR - Contact us
DISPER: Air pollution dispersion ˇ DISPER - Solutions - Data - Algorithms - Emissions - Graphs - ISC3 (VOL. 2)
Home - DEMO Download - Price
Equation (1‑93) includes
a Vertical Term, a Decay Term, and a vertical
dispersion term (σz).
The Vertical Term includes the effects of source elevation, receptor
elevation, plume rise, limited vertical mixing, gravitational settling and dry deposition.
1.5.2 Downwind, Crosswind and Radial Distances
The calculation of downwind
and crosswind distances is described in Section 1.1.2. Since the complex terrain algorithms in ISC
are based on a sector average, the radial distance is used in calculating the
plume rise (see Section 1.5.4) and dispersion parameters (see Section
1.5.5). The radial distance is
calculated as R = [x2 + y2]1/2, where x is the
downwind distance and y is the crosswind distance described in Section 1.1.2.
1.5.3 Wind Speed Profile
See the discussion given in
Section 1.1.3.
1.5.4 Plume Rise Formulas
The complex terrain algorithm
in ISC uses the Briggs plume rise equations described in Section 1.1.4. For distances less than the distance to final
rise, the complex terrain algorithm uses the distance-dependent plume height
(based on the radial distance) as described in Section 1.1.4.10. Since the complex terrain algorithm does not
incorporate the effects of building downwash, the Schulman-Scire plume rise
described in Section 1.1.4.11 is not used for complex terrain modeling. The plume height is used in the calculation
of the Vertical Term described in Section 1.5.6.
