Sökning: "shallow"

Visar resultat 21 - 25 av 421 avhandlingar innehållade ordet shallow.

1. 21. Shallow water carbonate basin of the Zanzibar channel, Tanzania

   Författare :Yohanna W Shaghude; Birger Larsen; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; allmän och historisk geologi; General and Historical Geology;

   Sammanfattning : The shallow water carbonate basin of the Zanzibar channel, Tanzania, has been investigated. This study discusses and describes the sea bottom topographic features, sediment composition, major characteristics of sediment distribution, provenance of sediments, and the depositional settings of the sediments . LÄS MER

3. 22. Environmental sanitation situation and solute transport in variably saturated soil in peri-urban Kampala

   Författare :Robinah Kulabako; Roger Thunvik; Felix Mtalo; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Environmental Sanitation; Kampala; Modelling; Phosphorus transport; Shallow groundwater; Peri-urban; Vadose zone; Environmental engineering; Miljöteknik;

   Sammanfattning : The environmental sanitation situation in Kampala’s peri-urban areas was reviewed and investigated through field studies, structured interviews with personnel from key institutions and administration of questionnaires to households in a selected peri-urban settlement (Bwaise III Parish).  In this settlement, specific field and laboratory measurements were undertaken so as to create a better understanding of the environmental sanitation situation, anthropogenic pollution loads and their transport and impact (with a focus on Phosphorus) in Kampala’s Peri-urban areas in pursuit of interventions for improving the environmental sanitation and protecting the shallow groundwater resource there. LÄS MER

4. 23. CFD Predictions Including Verification and Validation of Hydrodynamic Forces and Moments on a Ship in Restricted Waters

   Författare :Lu Zou; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; shallow water; canal; verification and validation; drift motion; hull; hydrodynamic forces and moments; deep water; bank effects; RANS;

   Sammanfattning : The evaluation of ship manoeuvrability is of significance at the initial design stage, as inappropriate manoeuvring performance may result in unstable ship motion, difficulties in steering and even marine accidents. Restricted waters, with the presence of solid boundaries of the flow field, such as a shallow seabed below the hull or a side bank in the vicinity of the hull, complicate the flow field and introduce an influence on hydrodynamic forces and moments acting on the hull. LÄS MER

5. 24. CFD Predictions Including Verification and Validation of Hydrodynamic Forces and Moments on Ships in Restricted Waters

   Författare :Lu Zou; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; RANS; deep water; shallow water; ship-to-ship interaction; bank effects; tanker hulls; canal; verification and validation; drift motion; hydrodynamic forces and moments;

   Sammanfattning : The evaluation of ship manoeuvrability is of significance at the initial design stage, as inappropriate manoeuvring performance may result in unstable ship motion, difficulties in steering and even marine accidents. Restricted waters, with the presence of solid boundaries of the flow field, such as a shallow seabed below the hull, a side bank in the vicinity of the hull or another hull nearby, complicate the flow field and introduce an influence on hydrodynamic forces and moments acting on the hull. LÄS MER

7. 25. Wave Loads on Offshore Wind Power Plants

   Författare :Jenny Trumars; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; ocean engineering; shallow water; fatigue; Non-linear waves; wave load; wind energy converter; perturbation theory;

   Sammanfattning : The thesis gives a short introduction to waves and discusses the problem with non-linear waves in shallow water and how they effect an offshore wind energy converter. The focus is on the realisation of non-linear waves in the time domain from short-term statistics in the form of a variance density spectrum of the wave elevation. LÄS MER