Wind Tunnel Measurement of Turbulent and Advective Scalar Fluxes: A Case Study on Intersection Ventilation

Figure 14

Relative contributions 𝑅 of dominant event to the vertical turbulent scalar flux ⟨𝑐^∗𝑤^⟩/𝑈_2𝐻 for four angles of the approach flow direction.

(a) Approach flow 𝜑=0^∘

(b) Approach flow 𝜑=5^∘

(c) Approach flow 𝜑=15^∘

(d) Approach flow 𝜑=45^∘