The vast majority of the existing lattice Boltzmann methods (LBMs) suggest to relax relevant quantities to a second-order truncated equilibrium state. Despite its simplicity and popularity, this choice does not fully exploit the potential of any lattice discretization. In this paper, an extended equilibrium state is adopted to evaluate the suitability of different LBMs (i.e., the Bhatnagar–Gross–Krook, the multiple-relaxation-time in terms of raw and central moments, and the simplified one) to simulate two-dimensional magnetohydrodynamic flows by means of the D2Q9 velocity space. Two sets of particle distribution functions are employed: one for the flow field and the other for the magnetic one. Even if the minimal five-velocities discretization is sufficient to represent the evolution of the latter, a nine-velocities model enhances the capability to enforce the divergence-free condition of the magnetic field, as shown. Therefore, a double-D2Q9 approach is herein devised. Eventually, the computational cost involved by all the schemes is discussed both in terms of virtual memory and run time. Interestingly, the simplified LBM for magnetohydrodynamic flows is herein presented for the first time.
This paper presents an Augmented Interactive Reality book (AIR) application, aimed to enhance the reading experience of adult-learners by incorporating Augmented Reality (AR) technology to improve the interaction of normal books. Various features and characteristics of Augmented Reality (AR) were applied to the chosen book, "My Vision" written by H.H. Sheikh Mohammed Bin Rashid Al Maktoum, Vice-President and Prime Minister of the UAE and Ruler of Dubai. The project is a joint-collaboration between Etisalat British Telecommunication Innovation Center (EBTIC) and Khalifa University, as part of the iCampus project on "Smart Learning-Edutainment". The project has received a number of positive feedbacks from the field study conducted with the general public, and has also been presented to H.H. Sheikh Mohammed Bin Rashid Al Maktoum -Ruler of Dubai, H.H. Sheikh Saif Bin Zayed Al Nahyan -Deputy Prime Minister and Minister of Interior, and several others.I.
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