Refine
Year
Publication Type
- Conference Proceeding (995) (remove)
Keywords
- Process-Driven Application (5)
- BPMN (4)
- Blockchain (3)
- Cyber Security (3)
- Facility Management (3)
- Projektmanagement (3)
- QUIC (3)
- adaptive optics (3)
- deformable mirror (3)
- Augmented Reality (2)
Faculty
- Chemieingenieurwesen (CIW) (294)
- Physikingenieurwesen (PHY) (160)
- Wirtschaft (MSB) (106)
- Gesundheit (MDH) (101)
- Energie · Gebäude · Umwelt (EGU) (80)
- Bauingenieurwesen (BAU) (63)
- Oecotrophologie · Facility Management (OEF) (53)
- Maschinenbau (MB) (43)
- Elektrotechnik und Informatik (ETI) (42)
- Sozialwesen (SW) (23)
- Center for Real Estate & Organization Dynamics (17)
- Wandelwerk. Zentrum für Qualitätsentwicklung (13)
- ITB (6)
- keine Zuordnung (6)
- Design (MSD) (2)
- IBL (2)
- iSuN Institut für Nachhaltige Ernährung (2)
- Physikalische Technik (1)
This paper deals with an experimental investigation of the mean and turbulence characteristics of supercritical quasi-uniform and gradually varied open-channel flows over a transitional rough bed. These conditions are typical for sediment bypass tunnels. The results show that the log-law holds well in the inner region across the channel. The roughness shifts the velocity profiles downward by an amount of ΔU+. The velocity-dip phenomenon and strong secondary currents exist in the channel for narrow open-channel flow. These currents cause the Reynolds shear stress distributions to deviate from the linear distribution and an undulation on the transversal distribution of the bed shear stress, which matches with the bed abrasion pattern. The streamwise turbulence intensity profiles deviate from the semi-empirical universal function whereas the vertical turbulence intensity profiles fit well with it only at the centerline of the channel. A strong wall effect exists on the turbulence intensities in the outer region.
For a long time, a large number of top managers in listed companies have regarded communication with their shareholders as a necessary evil and now, in times of activist investors, are faced not only with the great challenges of opening up to shareholders and revealing their own corporate strategy, but also at the same time have to withstand the massive external pressure from activist investors, who are rarely majority shareholders. To achieve this, it is essential that a complete rethink-ing of the communication strategy of those responsible for the company takes place.
Without adequate measures, reservoirs are not sustainable, neither the
reservoir itself due to continuous sedimentation, nor the downstream ecosystem due to altered sediment continuity. Appropriate actions are inevitable and require a systematic sedimentation management. Sediment bypassing constitutes one effective strategy that routes sediment load around reservoirs during floods. A sediment bypass system has the advantage that only newly entrained sediment is diverted from the upstream to the downstream reach thereby re-establishing sediment connectivity. Hence, such a system contributes to a sustainable water resources management while taking the downstream environment into consideration. This paper gives a state-of-the-art overview
encompassing design, bypass efficiency, hydraulics, challenges due to abrasion, positive effects on both downstream morphology and ecology, and makes design recommendations.