| Project/Area Number |
11650616
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Architectural environment/equipment
|
|---|
| Research Institution | TOKYO INSTITUTE OF POLYTECHNICS |
|---|
Principal Investigator |
OHBA Masaaki TOKYO INSTITUTE OF POLYTECHNICS, Professor, 工学部, 教授 (90130947)
|
|---|
| Project Period (FY) |
1999 – 2000
|
| Project Status |
Completed (Fiscal Year 2000)
|
| Budget Amount *help |
¥3,500,000 (Direct Cost: ¥3,500,000)
Fiscal Year 2000: ¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 1999: ¥2,000,000 (Direct Cost: ¥2,000,000)
|
|---|
| Keywords | Concentration prediction model / Air pollution / Isolated high-rise building / Oncoming flow profiles / Building surface concentration profiles / Wind tunnel / Wind load on buildings / 建物近傍空気汚染 / 接近流タイプ / 建物外表面 / 空気汚染 / べき指数 / 流れパターン / 建物近傍汚染 |
|---|
| Research Abstract |
This project developed the calculation methods for estimating building surface concentration profiles when point sources were located near an isolated high-rise building. The proposed methods used a decay index of vertical concentration profiles as substitutes for diffusion widths based upon Gaussian plume concepts. The index was derived from the experimental results that the vertical concentration profiles were inversely proportional to the power of the distance between point sources and sampling ports on the building surfaces. The empirical formulas could predict the vertical profiles of building surface concentrations with a mean prediction error of 35% when point sources were located upstream from the building and 14% for the cavity region. The prediction accuracy became worse when the location of maximum concentrations could not be estimated well.
|
