Profesyonel dalıcılıkta birden fazla tedarik ile soluma gazı karışımı eniyilemesi

Men have gone into the ocean to gather food since the beginning of human life, but it is hard to distinguish the precise date or origin of diving. We know from fossils that as long as 4,500 years ago, Mesopotamian people participated in diving as a means of trade, typically gathering pearl oysters. Professional diving activities have expanded dramatically as a result of technology improvements in the last century. Professional diving is when divers are compensated for their efforts. Professional diving is divided into various disciplines, the most well-known of which being commercial diving. Commercial diving is an application of professional diving in which the diver does underwater work for industrial, construction, engineering, maintenance, or other commercial objectives that are comparable to work performed outside of the water, with the diving being secondary to the activity. The goal of this research is to optimize the breathing gas combination while lowering diving expenses and maintaining the safety of the divers. The cost of the diver and the cost of breathing gas are the two primary expenses examined in this study. The cost of a diver is considered to be hourly. Because the breathing gas is considered to be made by enriching the air with oxygen, the sole expense is the addition of pure oxygen to the breathing gas to make the Nitrox combination. Both the diver and breathing gas costs will increase as the dive time increases. The dive period is separated into two parts, the first of which is the dive itself, during which the professional diver performs several duties. The diver should begin the ascent procedure whenever all or part of the duties has been performed. The diver does not do any tasks at this period and might be deemed idle. The goal is to cut down on the diver's idle time. To do so, the proportion of Nitrogen in the breathing gas should be reduced while the percentage of Oxygen in the breathing gas should be raised, resulting in an increase in the cost of breathing gas. Two hypothetical problems are solved to illustrate the proposed model. The first problem is considered as a single dive and the second problem is considered as a repetitive dive. In each problem single gas and multiple gas models have been used and each numerical example is solved with MATLAB using the Genetic Algorithm of Global Optimization Toolbox. To begin, the method generates a random start population. After then, the algorithm generates a series of new populations. The program creates the future population using the individuals in the current generation at each step. The algorithm stops if the terminating conditions have been reached. The results show that the diver needs less time for decompression hence the idle time decreases. On the other hand, the gas cost increases gradually as the number of decompression gas increase. This is due to the fact that additional gases are richer with oxygen which increases the mixture cost. In total the cost decreases, but the most significant decrease happens with the addition of the second gas. The methods presented in this study are strictly theoretical, and divers should always be properly trained and certified.