Raindrop and flow interactions for interrill erosion with wind-driven rain
JOURNAL OF HYDRAULIC RESEARCH, cilt.51, sa.5, ss.548-557, 2013 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 51 Sayı: 5
- Basım Tarihi: 2013
- Doi Numarası: 10.1080/00221686.2013.778339
- Dergi Adı: JOURNAL OF HYDRAULIC RESEARCH
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.548-557
- Anahtar Kelimeler: Flow kinetic energy flux, interrill erosion, raindrop impact velocity vector, Water Erosion Prediction Project, wind-driven rain, SEDIMENT TRANSPORT CAPACITY, SPLASH-SALTATION, WATER EROSION, SAND DETACHMENT, OVERLAND-FLOW, SOIL-EROSION, IMPACT, PREDICTION, TUNNEL, MODEL
- Ankara Üniversitesi Adresli: Evet
Özet
Wind-driven rain (WDR) experiments were conducted to evaluate the interrill component of the Water Erosion Prediction Project model with a two-dimensional experimental set-up in a wind tunnel. Synchronized wind and rain simulations were applied to soil surfaces on windward and leeward slopes of 7, 15 and 20%. Since WDR fall trajectory varied with horizontal wind velocities of 6, 10, and 14m s(-1), magnitude of raindrop normal and lateral stresses on flow at the impact-flow boundary also changed and differentially directed lateral jets of raindrop splashes with respect to downward flows occurred. To account for interactions between raindrop impact and interrill shallow flow, a vector approach with kinetic energy fluxes of both raindrop splashes and flow were used and this resulted in greater correlations in predicting sediment delivery rates.