پديد آورندگان :
علي زاده خاركشي، بهراد داﻧﺸﮕﺎه ﺻﻨﻌﺘﯽ ﻧﻮﺷﯿﺮواﻧﯽ ﺑﺎﺑﻞ - گروه ﭘﮋوﻫﺸﯽ اﻧﺮژي ﻫﺎي درﯾﺎﭘﺎﯾﻪ , شفقت، روزبه داﻧﺸﮕﺎه ﺻﻨﻌﺘﯽ ﻧﻮﺷﯿﺮواﻧﯽ ﺑﺎﺑﻞ - گروه ﭘﮋوﻫﺸﯽ اﻧﺮژي ﻫﺎي درﯾﺎﭘﺎﯾﻪ , جهانيان، اميد داﻧﺸﮕﺎه ﺻﻨﻌﺘﯽ ﻧﻮﺷﯿﺮواﻧﯽ ﺑﺎﺑﻞ - گروه ﭘﮋوﻫﺸﯽ اﻧﺮژي ﻫﺎي درﯾﺎﭘﺎﯾﻪ , رضانژاد، كورش داﻧﺸﮕﺎه ﻟﯿﺴﺒﻮن ﭘﺮﺗﻐﺎل - موﺳﺴﻪ ﻓﻨﯽ ﻋﺎﻟﯽ ﻟﯿﺴﺒﻮن , عالميان، رضوان داﻧﺸﮕﺎه ﺻﻨﻌﺘﯽ ﻧﻮﺷﯿﺮواﻧﯽ ﺑﺎﺑﻞ - گروه ﭘﮋوﻫﺸﯽ اﻧﺮژي ﻫﺎي درﯾﺎﭘﺎﯾﻪ
كليدواژه :
اﻧﺮژي ﻫﺎي ﺗﺠﺪﯾﺪ ﭘﺬﯾﺮ , ﺳﺘﻮن ﻧﻮﺳﺎﻧﯽ آب , ﺿﺮاﯾﺐ ﺑﯽﺑﻌﺪ ﻫﯿﺪرودﯾﻨﺎﻣﯿﮑﯽ , ﻣﻄﺎﻟﻌﻪ ﺗﺠﺮﺑﯽ
چكيده فارسي :
ﺷﺮاﯾﻂ اﻣﻮاج درﯾﺎ ﺗﺎﺛﯿﺮ ﺑﺴﺰاﯾﯽ ﺑﺮ رﻓﺘﺎر ﻫﯿﺪرودﯾﻨﺎﻣﯿﮑﯽ ﺳﺘﻮنﻫﺎي ﻧﻮﺳﺎﻧﯽ آب دارد؛ ﺑﻪﮔﻮﻧﻪاي ﮐﻪ اﺛﺮات ﻣﺘﻘﺎﺑﻞ ﻣﺒﺪل و اﻣﻮاج ورودي، در ﺗﻌﯿﯿﻦ و ارزﯾﺎﺑﯽ ﺿﺮاﯾﺐ ﻫﯿﺪرودﯾﻨﺎﻣﯿﮑﯽ ﺑﯽﺑﻌﺪ ﺑﺴﯿﺎر ﻣﻬﻢ ﻫﺴﺘﻨﺪ. ﻟﺬا ﺑﺎ ﺗﻮﺟﻪ ﺑﻪ اﻫﻤﯿﺖ اﯾﻦ ﺿﺮاﯾﺐ در ارزﯾﺎﺑﯽ ﻋﻤﻠﮑﺮد ﻣﺒﺪلﻫﺎي ﺳﺘﻮن ﻧﻮﺳﺎﻧﯽ آب، در اﯾﻦ ﻣﻘﺎﻟﻪ، ﺑﻪ ارزﯾﺎﺑﯽ ﺗﺠﺮﺑﯽ ﺿﺮاﯾﺐ ﻫﯿﺪرودﯾﻨﺎﻣﯿﮑﯽ ﺑﯽﺑﻌﺪ در ﺷﺮاﯾﻂ ﻋﻤﻠﮑﺮدي ﻣﺒﺪل ﺳﺘﻮن ﻧﻮﺳﺎﻧﯽ ﭼﻨﺪﻣﺤﻔﻈﻪاي ﭘﺮداﺧﺘﻪ ﻣﯽﺷﻮد. ﺑﺮاي ﺗﻌﺮﯾﻒ آزﻣﻮنﻫﺎي ﺗﺠﺮﺑﯽ، ﺑﺎ درﻧﻈﺮ ﮔﺮﻓﺘﻦ ﻣﻮﻗﻌﯿﺖ ﻧﺼﺐ ﻣﺒﺪل ﺑﺮ روي ﻣﻮجﺷﮑﻦ، از ﺷﺮاﯾﻂ درﯾﺎي ﻣﺎزﻧﺪران اﺳﺘﻔﺎده ﺷﺪه اﺳﺖ. ﭘﺲ از ﮐﺎﻟﯿﺒﺮاﺳﯿﻮن ﺗﺠﻬﯿﺰات و ﻧﯿﺰ آﻧﺎﻟﯿﺰ ﻋﺪم ﻗﻄﻌﯿﺖ، آزﻣﻮنﻫﺎي ﺗﺠﺮﺑﯽ در اﺳﺘﺨﺮ ﻣﻮج داﻧﺸﮕﺎه ﺻﻨﻌﺘﯽ ﻧﻮﺷﯿﺮواﻧﯽ ﺑﺎﺑﻞ اﻧﺠﺎم ﺷﺪه اﺳﺖ. ﺑﺎ ﺗﻮﺟﻪ ﺑﻪ ﻧﺘﺎﯾﺞ ﺑﻪدﺳﺖ آﻣﺪه، ﺑﺎ ﻓﺮض ﯾ ﮏ ﻋﻤﻖ آﺑﺨﻮر ﺑﯽ ﺑﻌﺪ و ﺛﺎﺑﺖ، ﺑﺎ اﻓﺰ اﯾﺶ ﻓﺮﮐﺎﻧﺲ ﺑﯽﺑﻌﺪ ﻣﻮج ﺑﺮﺧﻮرد ي، ﺿﺮﯾﺐ ﺑﯽﺑﻌﺪ ﻣﻮج اﻧﺘﻘﺎل ﯾﺎﻓﺘﻪ، ﺿﺮﯾﺐ ﺑﯽﺑﻌﺪ ﻣﻮج اﻧﻌﮑﺎس ﯾﺎﻓﺘﻪ، ﺿﺮﯾﺐ ﺑﯽﺑﻌﺪ ﺗﺨﻠﯿﻪ و ﺿﺮ ﯾ ﺐ ﺑﯽﺑﻌﺪ ﻓﺸﺎر اﻓﺰ اﯾﺶ ﻣﯽﯾﺎﺑﻨﺪ. از ﻃﺮف دﯾﮕﺮ ﻧﺘﺎﯾﺞ ﻧﺸﺎن ﻣﯽدﻫﻨﺪ، در اﺛﺮ ﺗﻐﯿﯿﺮ ﻋﺪد ﺑﯽﺑﻌﺪ ﻣﻮج از 1/9ﺗﺎ 3/3، ﺿﺮاﯾﺐ ﺑﯽﺑﻌﺪ ﺗﺨﻠﯿﻪ، ﻣﻮج اﻧﻌﮑﺎس ﯾﺎﻓﺘﻪ، ﻓﺸﺎر و ﻣﻮج اﻧﺘﻘﺎلﯾﺎﻓﺘﻪ ﺑﻪ ﺗﺮﺗﯿﺐ 1/6ﺑﺮاﺑﺮ، 2/2ﺑﺮاﺑﺮ، 2/8ﺑﺮاﺑﺮ و 3/5ﺑﺮاﺑﺮ ﻣﯽﺷﻮﻧﺪ؛ ﯾﻌﻨﯽ ﺿﺮﯾﺐ ﺑﯽﺑﻌﺪ ﻣﻮج اﻧﺘﻘﺎل ﯾﺎﻓﺘﻪ ﺣﺴﺎﺳﯿﺖ ﺑﺎﻻﯾﯽ ﻧﺴﺒﺖ ﺑﻪ ﺷﺮاﯾﻂ ﻣﻮج دارد؛ ﺿﺮﯾﺐ ﺑﯽﺑﻌﺪ ﺗﺨﻠﯿﻪ در ﻣﻘﺎﯾﺴﻪ ﺑﺎ دﯾﮕﺮ ﺿﺮاﯾﺐ، ﺗﻐﯿﯿﺮات ﮐﻤﺘﺮي ﺧﻮاﻫﺪ داﺷﺖ. از ﻃﺮﻓﯽ ﻧﺘﺎﯾﺞ ﻧﺸﺎن دادﻧﺪ ﮐﻪ ﻣﺒﺪل آزﻣﺎﯾﺸﮕﺎﻫﯽ در اﯾﻦ ﺗﺤﻘ ﯿ ﻖ در ﺑﻬﺘﺮ ﯾ ﻦ ﺣﺎﻟﺖ داراي راﻧﺪﻣﺎن 41/8٪ ﻣﯽﺑﺎﺷﺪ. اﯾﻦ راﻧﺪﻣﺎن در ﻓﺮﮐﺎﻧﺲ ﻃﺒﯿﻌﯽ ﺑ ﯽﺑﻌﺪ 0/88 و ﻋﻤﻖ آﺑﺨﻮر ﺑﯽ-ﺑﻌﺪ 0/032 رخ ﻣ ﯽدﻫﺪ؛ در اﯾﻦ ﺷﺮ اﯾ ﻂ داﻣﻨﻪ ﻧﻮﺳﺎﻧﺎت آب درون ﺳﺘﻮن ﻧﻮﺳﺎﻧ ﯽ ﺑﻪ 9/6 ﺳﺎﻧﺘ ﯽﻣﺘﺮ ﻣ ﯽرﺳﺪ.
چكيده لاتين :
Sea wave conditions have a significant effect on the hydrodynamic behavior of oscillating
water columns (OWC). The interactions of the converter and the input waves are crucial in
determining and evaluating the non-dimensional hydrodynamic coefficients. Therefore,
considering the importance of these coefficients in evaluating the performance of OWC, In
this paper, experimental evaluation of non-dimensional hydrodynamic coefficients of a multichamber
OWC has been discussed. To define the experimental tests, considering the
installation location of the converter on the breakwater, the conditions of the Caspian Sea
were applied. Calibration and uncertainty analysis has been performed, and experimental
tests have been carried out in the wave tank of the BNUT. According to the obtained results,
non-dimensional water draft depth is assumed to be constant, with increasing nondimensional
frequency of the incident wave, the non-dimensional coefficient of the
transmitted wave, reflected wave, discharge coefficient, and pressure coefficient increase. On
the other hand, the results showed that changing the non-dimensional number of the wave
from 1.9 to 3.3, the discharge coefficients, the reflected wave, the pressure, and the
transmitted wave increase by 1.6 times, 2.2 times, 2.8 times, and 3.5 times, respectively. The
non-dimensional coefficient of the transmitted wave is highly sensitive to the wave
conditions; the non-dimensional discharge coefficient will have fewer changes than other
coefficients. On the other hand, the results showed that the laboratory converter in this study
has an efficiency of 41.8% in the best state; this efficiency occurs at the non-dimensional
natural frequency of 0.88 and the non-dimensional water draft depth of 0.032; under these
conditions, the amplitude of water fluctuations inside the OWC reaches 9.6 cm.
