MATHEMATICAL AND ENGINEERING MODELLING OF THE SURFACE SEA PHYTODAMPERS

摘要

In the last pair of decades in Bulgaria on small portions a lot of money have beenrnspent to stabilize the multitude of slopes and landslides along the Black Sea coast,rnalong the Danube riverbank, or over the entire territory of Bulgaria. Independently ofrnthe special cares the spending of this mountain of money did not provide essentialrnresults. This became boldly seen in the light of the political and economical changesrnin Bulgaria started in 1989, and especially due to the cruel economical crisis. Up tornthe authors, the main causes are in the absence of suitable regulations concerningrnthe new forms of land property and the corresponding rules of buildings construction;rnbad climatic conditions in the last 7 years; non-systematic academical investigations,rnetc. That is why, after the several spring landslides, destroying exclusively largernzones along the Bulgarian Black Sea coast, some activation of the attempts to bernapplied new and methodically organized efforts to stop these disaster phenomena.rnThe high analytical and engineering beginnings in the solution of the aforementionedrnproblems are unified by the original idea to use the sea kelps to increase the naturalrndensity of the sea water. The fact that the foliage and the stalks of the kelps possessrngreat specific surface generating additional friction shear stresses in the mixturernwater + kelps is essentially used. Obviously this will damp the stormy sea wavesrnprotecting the offshore engineering structures and the coastal slops from thernperiodical powerful and harmful trembling. Some ecological aspects generated by thernkelp presence in the sea water are considered. The paper is planned as a shortrnversion (a shortened text part) of a motivation of a future project on the multitude ofrnproblems connected with the long term stability of the sea coasts.