Development of a stochastic computational fluid dynamics approach for offshore wind farms

In this paper, a method for stochastic analysis of an offshore wind farm using computational fluid dynamics (CFD) is proposed. An existing offshore wind farm is modelled using a steady-state CFD solver at several deterministic input ranges and an approximation model is trained on the CFD results. The approximation model is then used in a Monte-Carlo analysis to build joint probability distributions for values of interest within the wind farm. The results are compared with real measurements obtained from the existing wind farm to quantify the accuracy of the predictions. It is shown that this method works well for the relatively simple problem considered in this study and has potential to be used in more complex situations where an existing analytical method is either insufficient or unable to make a good prediction

Health-related quality of life and rehabilitation cost following intensive care unit stay in multiple trauma patients

OBJECTIVES: The objective of this study was to assess changes in health-related quality of life (HRQOL) in multiple trauma patients due to motor vehicle crashes during a follow-up period of 2 years after discharge from an intensive care unit (ICU) and the effect of income and financial cost of rehabilitation in HRQOL. METHODS: The study was a prospective observational study of multiple trauma patients from January 2009 to January 2011 who were hospitalized in a general, medical, and surgical ICU of a district hospital in Athens, Greece. Eighty-five patients with multiple traumas due to motor vehicle crashes and with an ICU stay of more than 24 hours were included in the study. HRQOL was assessed by a general questionnaire, the EuroQol 5D. RESULTS: Increased monthly household income and absence of traumatic brain injuries were associated with an improved EQ-VAS score. The frequency of severe problems in mobility, self-care, usual activities, pain/discomfort, and anxiety/depression decreased over time. The financial cost of rehabilitation was initially high but decreased over time. CONCLUSIONS: Severely injured victims of motor vehicle crashes suffer from serious problems in terms of HRQOL which is gradually improved even 2 years after hospital discharge. In addition, HRQOL is significantly related to income. Resources used for rehabilitation decrease over time, but even at 24 months, the patients still use half of the amount as compared with the cost of the first 6 months after trauma

ESICM LIVES 2016: part two : Milan, Italy. 1-5 October 2016.

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