The presence of nanoparticles in heat exchangers ascertained increment in heat transfer. The present work focuses on heat transfer in a longitudinal finned tube heat exchanger. Experimentation is done on longitudinal finned tube heat exchanger with pure water as working fluid and the outcome is compared numerically using computational fluid dynamics (CFD) package based on finite volume method for different flow rates. Further 0.8% volume fraction of aluminum oxide (Al2O3) nanofluid is considered on shell side. The simulated nanofluid analysis has been carried out using single phase approach in CFD by updating the user-defined functions and expressions with thermophysical properties of the selected nanofluid. These results are thereafter compared against the results obtained for pure water as shell side fluid. Entropy generated due to heat transfer and fluid flow is calculated for the nanofluid. Analysis of entropy generation is carried out using the Taguchi technique. Analysis of variance (ANOVA) results show that the inlet temperature on shell side has more pronounced effect on entropy generation.

Axiological chaos and unsustainable man’s acting in a contemporary world has led him to a total confusion. He constantly acts toward environmental and cultural degradation. Also in social dimension a permanent and “general” crisis dominates. The crisis is rooted on multi-category stratification and based on post-truth models of interpersonal communication in traditional and virtual realities. Neoliberal model of economical conquest, in turn, effects unsustainability in economic sphere. Thus, in common reception – for the most people in the world – such situation has become unbearable. So, it is the educators’ duty to look for – with the intention to put into practise – such concepts and pedagogies, which could prepare the whole global society to real – not declaratory false – co-creation of its life in the world, understood as an actual and common home. Taking such perspective, the theory of Argentinian philosopher – Ernesto Laclau becomes an interesting proposition. The time of mono-dimensional – protestant and neoliberal – interpretation of values comes to the end. Now the time has come to accept the equality of different – having their roots in various cultures – value understanding. Possibility of local and particular interpretation of values – along with maintaining the rule of common good – gives the chance to update the education according to real, thus multidimensional humanistic ideal. Such a standpoint presents a way to cure/reform intercultural education, which nowadays is at an impasse. Mainly it uses stiff schemes and repeated patterns, so it has become imitative and conservative. In its contemporary formula intercultural education is not able to respond to present challenges of multicultural and global society. The need to implant into its structure the concept of sustainable development emerges as a must.

In the article I indicate and synthetically discuss issues that can be found in the achievements of Bertrand Russell, and which can be included in the domain of metaphilosophy. I point to Russell’s philosophical inspirations and to his views on philosophy. His views are intertwined with the threads of the traditional understanding of philosophy and innovative elements. These innovative elements include assigning a special role to mathematical logic, of which Russell is one of the founders, and emphasizing the role of analysis in philosophical research. It is also characteristic of him to emphasize the role of science for philosophical reflection. At the same time, however, Russell rejects the radical slogans of logical positivism. This justifies the thesis that in his oeuvre there are threads of both traditional and innovative understanding of philosophy and its tasks.

Development of a reliable numerical model capturing major physical mechanisms controlling explosive welding and considering properties of all process components i.e. base plate and flyer plate is the goal of the paper. To properly replicate materials behavior under these severe conditions a meshfree approach, namely Smooth Particle Hydrodynamics (SPH), was used to discretize the computational domain. The model is based on the Mie-Gruneisen shock equation of state applied to the Ti/Cu system as a case study. Examples of results in the form of velocity, equivalent stress, equivalent strain, and pressure fields are presented within the paper.

The ten years Stanisław Pigoń spent in Wilno (1921-1931) was a very important phase of his life. Wilno not only attracted a great deal of his research but also became the focus of a lasting emotional attachment, a sentiment which he reaffirmed in a memoir published shortly before his death in 1968. Although a lot is already known about Pigoń’s Wilno decade, there are some episodes that are worth a closer examination. One of them is a debate about Konrad’s cell which he triggered off just before leaving Wilno. The controversy concerns a cell in the former Basylian Monastery where Adam Mickiewicz was imprisoned in 1823 and where Konrad, the main character of his Dziady (Forefathers’ Eve) undergoes a spiritual transformation, the climax of the poetic drama. Pigoń contributions to this interminable debate exhibit a fine balance of scholarly precision and passionate conviction. This article not only looks at the origin and the early phases of the Konrad’s cell controversy in their contemporary background but also tries to show Pigoń’s involvement in the life of the university and the cultural and literary life of Wilno.