The development and hydraulic roughness of subaqueous dunes

Research on bedforms, especially river dunes with focus on the Dutch river Waal, and the effect of these bedforms on the hydraulic roughness of the river. Morphological descriptions, prototype measurements and flume experiments. PhD thesis Utrecht University.

Aggradation and Degradation of Alluvial-Channel Beds

The objectives of the present investigation were the determination of the characteristic parameters of morphological processes in alluvial channels. Special attention was directed toward the aggradation process due to total sediment-load augmentation and degradation due to either sediment-discharge diminution or base-level lowering. Linear and...

Snelheidsverdelingen in kanalen met verschillende bodemprofielen

Een overzicht wordt gegeven van bij modellen gemeten snelheidsverdelingen over de dwarsdoorsnede van vier kanalen met verschillende bodemprofielen. Teneinde ook voor kanalen met andere bodemprofielen snelheidsverdelingen te kunnen bepalen, is een generalisatie gemaakt van de gemeten verdelingen. Als illustratie van het gebruik van de gevonden...

Beddingvormen

Overview of bed forms (ripples, dunes, etc) in rivers. A literature study regarding bed forms caused by river flow in cohesionless material (sand bed). Bed forms generated by waves and wind are excluded.

An analysis of relationships between flow conditions and statistical measures of bed configurations in straight and curved alluvial channels

The reliability of predictors for friction factors and rates of sediment transport in alluvial channels is open to question when they are applied to sinuous channels. Bed-form geometry in a curved channel and a straight flume which are subject to the same nominal flow conditions is investigated by statistical analysis of records of streamed...