Issue 12

A. Namdar et alii, Frattura ed Integrità Strutturale, 12 (2010) 57-62 ; DOI: 10.3221/IGF-ESIS.12.06 57 Tsunami numerical modeling and mitigation Abdoullah Namdar, Asima Nusrath University of Mysore, Mysore, India. ab_namdar@yahoo.com; sina_a_n@yahoo.com A BSTRACT . The numerical modeling and wave theory are used in tsunami mitigation analysis. It is assumed sea forest is simulating offshore structure submitted to wave loads. The sea forest acts simulate break waves in conservation of coastal territory and facility installed over there. The result reveal that mathematical modeling and numerical simulation can be used to understand tsunami ability in design and urban construction, the research indicates reduction of water deep by sea forest resulted in reducing geometry and all wave ability. K EYWORDS . Tsunami; Wave theory; Offshore structure; Urban design. I NTRODUCTION he tsunami has brought lot of suffering to people residing in the coastal areas. An estimated 489 cities within the Pacific states of Alaska, California, Hawaii, Oregon, and Washington are susceptible to floods, cyclones and tornadoes, and as many as 900,000 residents of these cities would be inundated by a height of 50-foot wave striking these coasts. It has been reported by the testing of “tsunami resistant model house” that the impact on a new ‘tsunami resistant model house’ design house was far less than that on a typical coastal house. This model was developed in the USA and now built in Sri Lanka. Digital images recorded during the test reveal how the tsunami wave passed through the new house design without damaging [1]. On the morning of Sunday, December 26, 2004 an earthquake registering 9.0 on the Richter scale struck off the western coast of North Sumatra, triggering massive waves that devastated coastal regions throughout the Indian Ocean rim. Indonesia’s Aceh Province suffered the greatest mortality with widespread destruction extending along more than 1,000 kilometers of coastline. Approximately one year after the tsunami, Indonesian government estimates a total of 129,775 deaths, 38,786 missing and 504,518 tsunami-displaced in Aceh Province [2]. The implementation of urban planning and design particularly for mitigating tsunami has been applied by various researchers [3-5]. The urban design is the main and primary concept of social life. In this investigation authors have made an attempt to mathematically calculate tsunami force and found ways to disable its force before reaching the coastline of urban area. This paper is attempting to propose method to improve urban design by utilizing the polluted coastal areas which will not only serve to increase the ecological condition by developing and implementing the concept of green belts but also serve as a barrier of the oceanic waves to enter the coast. M ETHODOLOGY AND M ODELING here is two methods in understanding wave force applied to the structure or to any natural barrier, the first one is application of way theory and second is using fundamental fluid dynamics equations. Here, the application of wave theory is considered. T T