Movable Bed Physical Models
Hsieh Wen Shen
prosinec 2012 · Nato Science Series C Kniha 312 · Springer Science & Business Media
E‑kniha
172
Stránky
reportHodnocení a recenze nejsou ověřeny Další informace
Podrobnosti o e‑knize
For centuries, physical models have been used to investigate complex hydraulic problems. Leonardo da Vinci (1452-1519) stated, "I will treat of such a subject. But first of all, 1 shall make a few experiments and then demonstrate why bodies are forced to act in this matter. " Even with the current advancements of mathematical numerical models, certain complex three-dimensional flow phenomena must still rely on physical model studies. Mathematical models cannot provide adequate solutions if physical processes involved are not completely known. Physical models are particularly attractive to investigate phenomena-involved sediment movements because many three-dimensional sediment processes are still unclear at this stage. Theoretically, there are numerous factors governing movable bed processes and it is nearly impossible to design model studies to obey all the model criteria. Sometimes, appropriate lightweight materials are difficult or too costly to obtain. Often, distorted models are used due to the limitation of available space and the requirement for greater vertical flow depth to investigate vertical differences of various parameters. The turbulence level in the model may also be maintained at a sufficient level to reproduce a similar flow pattern in the prototype. Frequently, engineers are forced to employ distorted models that cannot be designed to satisfy all governing criteria correctly. Thus each hydraulic laboratory has developed its own rules for model testing and a great deal of experience is needed to interpret model results.
Ohodnotit e‑knihu
Sdělte nám, co si myslíte.
Informace o čtení
Telefony a tablety
Nainstalujte si aplikaci Knihy Google Play pro Android a iPad/iPhone. Aplikace se automaticky synchronizuje s vaším účtem a umožní vám číst v režimu online nebo offline, ať jste kdekoliv.
Notebooky a počítače
Audioknihy zakoupené na Google Play můžete poslouchat pomocí webového prohlížeče v počítači.
Čtečky a další zařízení
Pokud chcete číst knihy ve čtečkách elektronických knih, jako např. Kobo, je třeba soubor stáhnout a přenést do zařízení. Při přenášení souborů do podporovaných čteček elektronických knih postupujte podle podrobných pokynů v centru nápovědy.
