Estimation of the solar thermal power generation potential in Pamplona (northern Spain)

Trabajo presentado a la XII National and III International Conference on Engineering Thermodynamics. Madrid, 2022In this work, an analysis of the potential of the city of Pamplona to produce solar thermal energy was carried out, according to the solar radiation received. As a result, for each residential, industrial, or service rooftop, information was provided on (1) the area available for thermal installation, (2) the solar thermal installation capacity and (3) the monthly and annual thermal energy generation potential. It was found that, if all suitable areas of the city are used, it would be possible to achieve an annual total solar thermal energy production of 1197.69 GWh. If solar energy supply and thermal demand were perfectly coupled over time, it would be possible to cover 99.1% of Pamplona's thermal energy demand.The authors gratefully acknowledge the financial support provided by the Government of Navarre. Ignacio García thanks to the Spanish Ministry of Universities and the European Union- Next Generation EU for their financial support (Program for the requalification of the Spanish university system 2021-2023, Resolution 1402/2021)

フクマク ハシュ オ キタシタ アクセイド フメイナ シキュウ ヘイカツキン シュヨウ ノ 1レイ

悪性度不明な子宮平滑筋腫瘍は再発・転移をきたすことが知られているが、特に腹膜播種再発した症例の報告は乏しく、その治療方針は定まっていない。今回我々は初回の子宮全摘術から約13年、腹膜再発切除から約8年経過した後に腹膜へ再再発をきたした悪性度不明な子宮平滑筋腫瘍の1例を経験したため報告する。症例は68歳、女性。55歳時に両側付属器切除と子宮全摘術を受け、低異型度子宮肉腫と診断された。60歳時に骨盤内の10mm大の再発病巣を切除した。脾臓近傍に55mm×55mm×40mm大の境界明瞭で内部均一な増大傾向を示す腫瘤性病変を認めたことから子宮肉腫の再発を含めた診断かつ治療目的に手術の方針とした。開腹手術にて術前画像診断で指摘されなかった播種病変を認めたが、全ての病変を肉眼的に局所切除し得た。病理診断にて悪性度不明な子宮平滑筋腫瘍と診断された。術後1年経過して再発兆候を認めていない。悪性度不明な子宮平滑筋腫瘍は術後長期間を経て腹膜播種再発することがある。再発病変に対しては局所切除が可能であり、手術が勧められる。Smooth muscle tumor with uncertain malignant potential can recur and become metastatic; however, reports regarding its recurrence are scarce. Here we present a case of a 68-year-old woman with a smooth muscle tumor with uncertain malignant potential with peritoneal dissemination recurrence that occurred approximately 13 years after initial hysterectomy. The patient had a history of bilateral salpingo-oophorectomy and total hysterectomy for low-grade uterine sarcoma at the age of 55 years. The patient underwent open surgery for recurrence in the pelvis at the age of 60 years. At follow-up, abdominal computed tomography revealed a uniform tumor measuring approximately 55 mm × 55 mm × 40 mm near the spleen with a clear boundary. During laparotomy, peritoneal dissemination recurrence, which was not detected preoperatively, was revealed. All recurrent tumors were macroscopically removed. The patient was pathologically diagnosed with smooth muscle tumor of uncertain malignant potential. No recurrence was found at postoperative 1 year. Smooth muscle tumors with uncertain malignant potential may recur with peritoneal metastasis long after surgery. Based on our experience, we concluded that local resection is possible in such cases. Therefore, surgery is recommended for recurrent smooth muscle tumors with an uncertain malignant potential.departmental bulletin pape

Prediction of dynamic and quasi-static impacts on vertical sea walls caused by an overtopped bore

This study comprises a detailed description of the individual overtopped bore impact processes against a vertical wall, situated on top of a dike. A twin peak force impact signal shape was observed with two distinct peaks during every impact. The two peaks were assigned consecutively to the dynamic components (thickness and velocity) or hydrostatic components (run-up of water at the wall) of the impacting bore. The two peaks were termed dynamic F1 and quasi-static F2 impact respectively. Based on available literature semi-empirical equations to describe either the dynamic F1 or quasi-static F2 impact force were investigated and the prediction accuracy evaluated using impact force data from large-scale experiments. The prediction accuracy of the dynamic F1 impacts was very low. The prediction accuracy of the quasi-static impact F2 was increased based on fitting the hydrostatic theory to the maximum run-up measurement at the wall. Based on these findings 80% of the maximum run-up height was effectively contributing to the maximum quasi-static force F2 on the wall. The results coincided well with previous small-scale studies (Chen et al. 2012). After deconstructing the process chain preceding an impact, using the physically most meaningful parameters to predict the impact force, evaluating on a range of existing approaches, and observing the scattered prediction results, it was concluded that the impact behavior is highly stochastic and statistical analysis would be more beneficial.This study comprises a detailed description of the individual overtopped bore impact processes against a vertical wall, situated on top of a dike. A twin peak force impact signal shape was observed with two distinct peaks during every impact. The two peaks were assigned consecutively to the dynamic components (thickness and velocity) or hydrostatic components (run-up of water at the wall) of the impacting bore. The two peaks were termed dynamic F1 and quasi-static F2 impact respectively. Based on available literature semi-empirical equations to describe either the dynamic F1 or quasi-static F2 impact force were investigated and the prediction accuracy evaluated using impact force data from large-scale experiments. The prediction accuracy of the dynamic F1 impacts was very low. The prediction accuracy of the quasi-static impact F2 was increased based on fitting the hydrostatic theory to the maximum run-up measurement at the wall. Based on these findings 80% of the maximum run-up height was effectively contributing to the maximum quasi-static force F2 on the wall. The results coincided well with previous small-scale studies (Chen et al. 2012). After deconstructing the process chain preceding an impact, using the physically most meaningful parameters to predict the impact force, evaluating on a range of existing approaches, and observing the scattered prediction results, it was concluded that the impact behavior is highly stochastic and statistical analysis would be more beneficial.C

Application of open boundaries within a two-way coupled SPH model to simulate non-linear wave-structure interactions

A two-way coupling between the fully non-linear potential flow (FNPF) solver OceanWave3D and the Smoothed Particle Hydrodynamics (SPH) solver DualSPHysics is presented. At the coupling interfaces within the SPH domain, an open boundary formulation is applied. An inlet and outlet zone are filled with bu er particles. At the inlet, horizontal orbital velocities and surface elevations calculated with OceanWave3D are imposed on the bu er particles. At the outlet, horizontal orbital velocities are imposed, but the surface elevation is extrapolated from the fluid domain. Velocity corrections are applied to avoid unwanted reflections in the fluid domain. The SPH surface elevation can be coupled back to OceanWave3D, where the original solution is overwritten. The coupling methodology is validated using a 2-D test case of a floating box. Additionally, a 3-D proof of concept is shown where overtopping waves are acting on a heaving cylinder. The 2-way coupled model proofs to be capable of simulating wave propagation and wave-structure interaction problems with an acceptable accuracy with RMSE values remaining below the smoothing length h.A two-way coupling between the fully non-linear potential flow (FNPF) solver OceanWave3D and the Smoothed Particle Hydrodynamics (SPH) solver DualSPHysics is presented. At the coupling interfaces within the SPH domain, an open boundary formulation is applied. An inlet and outlet zone are filled with bu er particles. At the inlet, horizontal orbital velocities and surface elevations calculated with OceanWave3D are imposed on the bu er particles. At the outlet, horizontal orbital velocities are imposed, but the surface elevation is extrapolated from the fluid domain. Velocity corrections are applied to avoid unwanted reflections in the fluid domain. The SPH surface elevation can be coupled back to OceanWave3D, where the original solution is overwritten. The coupling methodology is validated using a 2-D test case of a floating box. Additionally, a 3-D proof of concept is shown where overtopping waves are acting on a heaving cylinder. The 2-way coupled model proofs to be capable of simulating wave propagation and wave-structure interaction problems with an acceptable accuracy with RMSE values remaining below the smoothing length h.C